High School
SAT
ACT
University
MCAT
LSAT
DAT

A 50-grams rubber ball is dropped from a height of 4 m. It hits the ground and …

Related Topics

Wize University Physics Textbook (Master) > Motion in 1/2/3D: Kinematics

Free Fall

3 Activities

Wize University Physics Textbook (Master) > Momentum, Impulse and Collisions

Linear Momentum and Impulse

5 Activities

A 50-grams rubber ball is dropped from a height of 4 m. It hits the ground and bounces up, rising to height of 3.2 m. If the impact with ground only takes 0.05 second, what is the average force acting on the ball during the impact?

More Free Fall Questions:
Kinematics: Frog Jump
A frog jumps by pushing off the ground, and accelerates very quickly while its feet are still on the ground. Its center of mass lifts 3.0 cm while it is pushing off. The frog reaches a height of 40 cm off the ground before falling again. What acceleration did it have while launching itself off the ground?
Kinematics: Frog Jump
A frog jumps by pushing off the ground, and accelerates very quickly while its feet are still on the ground. Its center of mass lifts 3.0 cm while it is pushing off. The frog reaches a height of 40 cm off the ground before falling again. What acceleration did it have while launching itself off the ground?
Kinematics: Frog Jump
A frog jumps by pushing off the ground, and accelerates very quickly while its feet are still on the ground. Its center of mass lifts 3.0 cm while it is pushing off. The frog reaches a height of 40 cm off the ground before falling again. What acceleration did it have while launching itself off the ground?
Kinematics: Frog Jump
A frog jumps by pushing off the ground, and accelerates very quickly while its feet are still on the ground. Its center of mass lifts 3.0 cm while it is pushing off. The frog reaches a height of 40 cm off the ground before falling again. What acceleration did it have while launching itself off the ground?
Kinematics: Frog Jump
A frog jumps by pushing off the ground, and accelerates very quickly while its feet are still on the ground. Its center of mass lifts 3.0 cm while it is pushing off. The frog reaches a height of 40 cm off the ground before falling again. What acceleration did it have while launching itself off the ground?
Kinematics: Frog Jump
A frog jumps by pushing off the ground, and accelerates very quickly while its feet are still on the ground. Its center of mass lifts 3.0 cm while it is pushing off. The frog reaches a height of 40 cm off the ground before falling again. What acceleration did it have while launching itself off the ground?
Kinematics: Airplane dropping supplies
An airplane is travelling at horizontal speed v, at height h. It needs to drop supplies at the right time so that residents of an island will receive them. At what distance before flying over the islanders should you drop the supplies?
(If you feel more comfortable using numbers instead of variables, first try the problem with v = 215 km/h, h = 200 m.)
A 2 kg2\ kgball is dropped from a height of 10 m10\ monto the ground.
a) If the balls experiences no losses find the velocity of the ball right before it hits the ground. (in m/s)
b) If the ball loses 25% of its energy when it bounces, what height will it reach on its first bounce? (in m)
A slingshot is used to shoot a 500g500gmetal ball straight into the air (vertically). The slingshot can store a maximum energy of 250J250Jin its elastic.
a) What is the highest a ball could be shot?
b) What is the maximum speed that the ball would reach?
Two balls of equal mass are thrown from the top of a building with height10.0m10.0 m. One is thrown straight up at 10 m/s10\ m/s(call this ball A) and the other is thrown horizontally at 10 m/s10\ m/s (call this ball B).
a) Which balls has a greater speed when it reaches the ground? Why? Make sure you include conservation of energy in your answer.
b) Your friend tries to tell you that the ball thrown horizontally would have greater speed, because it has both an x-component and a y-component, and so the speed (magnitude of the velocity) should be higher. Why is he wrong? (Calculation not required, but you can do one if you want.)
Two children, Bob and Alice, and their dog, Buttercup, jump off of a bridge into the river below. Bob weighs more than Alice. Alice weighs twice as much as Buttercup.
a) Neglecting air friction and drag, who hits the water with the highest speed?
b) What is the ratio between the amount of energy Alice has at the top of the bridge compared to Buttercup?
Practice: Velocity & Acceleration
A ball is thrown with an initial upwards velocity of v0v_0from a height hh(both of these values are positive).
a) What is the point of maximum velocity?
b) What is the point of minimum acceleration?
I throw a ball horizontally off of a 30.0m-tall cliff. The ball hits Dave 20.0m from the base of the cliff. At what speed did I initially throw the ball? (Enter your answer in m/s, three sig figs)
Kinematics: Free fall
I drop a ball off a 100m building.
a) What is its velocity just before it hits the ground?
b) What is its average velocity?
Practice: Dropping a Basketball
I drop a basketball from the top of a tower that is 125 m tall. Find the time it takes for the ball to hit the ground. Enter your answer as a number of seconds with the appropriate number of sig figs. Use g = 9.81 m/s2.
Practice: Free Fall
A boy decided to estimate the height of a two-story building by throwing a stone up and measuring the time it takes for the stone to reach the top of the building. Assume he throws the stone from 1 meter above the ground, such that the stone stops and turns back just when it reached the top of the building.
A frog jumps by pushing off the ground, and accelerates very quickly while its feet are still on the ground. Its center of mass lifts 3.0 cm while it is pushing off. The frog reaches a height of 40 cm off the ground before falling again. What acceleration did it have while launching itself off the ground?
Practice: Measuring Height by Free Fall
Shannon decided to estimate the height of a two-storey building by throwing a stone up and measuring the time it takes for the stone to reach the top of the building. Assume she throws the stone from 1 meter above the ground, such that the stone stops and turns back just when it reached the top of the building.
a) If the stone takes 2 s2\ sto reach the top of the building, what is the initial velocity of the stone?
A gorilla that does not know how to drive, drives a car off a 10m cliff at speed of 20m/s. How far from the base of the cliff does the car land?
An object is thrown into the air. At the top of its trajectory, the vertical components of its acceleration and velocity are zero.
Practice question
A ball is thrown horizontally from top of building 55 m high strikes the ground at a point 35m from the building. What is the
(a) time to reach the ground
(b) initial speed of the ball
Practice: Free Fall
A boy decided to estimate the height of a 2-floor building by throwing a stone up and measure the time it takes for the stone to reach the top of the building. Assume he throws the stone such that the stone stops and turns back just when it reached the top of the building.
a) If the stone is thrown from 1m above the ground and it takes 2 s2\ sto reach the top of the building, what is the initial velocity of the stone?
b) What is the height of the building?
An apple is thrown upward from ground level at 20m/s. Determine the maximum height of the apple. Enter an answer with 1 decimal place.
Practice question : Free fall
An object is thrown vertically upwards with an initial velocity of 26.2 m/s. Determine the height (in meters) to which the object will rise above its initial height. Enter answer with 2 digits.
More Linear Momentum and Impulse Questions:
Practice: Dodgeball impulse
A 2.5 kg dodgeball hits the back wall of a school gym at 15 m/s at an angle of 50º to the wall. The ball is in contact with the wall for 0.15s before bouncing back at 12 m/s at an angle of 60º to the wall. What average force was exerted by the ball on the wall?
Practice: Momentum (impulse) with calculus
A force F=(2t2−5)NF=(2t^2-5) N is acting on a moving object with mass of 2kg in the direction of its motion for 5 seconds. If the initial speed of the particle is 5m/s.
For a top player, a tennis ball may leave the racket on the serve with a speed of 55 m/s (about 120 miles/h). If the ball has a mass of 0.060 kg and is in contact with the racket for about 4 ms (4×10−3 s)(4\times 10^{-3}~\rm s), estimate the average force on the ball.
10-gram bullet is hitting a thick wood target with velocity 600 m/sec and penetrates through it. The diagram below shows the force applied to the bullet as function of time. What is the velocity of the bullet as it leaves the target from other side?
A bat strikes a 0.145-kg baseball. Just before impact is traveling horizontally to the right at 50 m/s ,and it leaves the bat traveling to the left at an angle of 30∘30^{\circ}above horizontal with a speed of 65 m/s. If the ball and bat are in contact for 1.75 ms, find the horizontal and vertical components of the average force on the ball.
Impulse and momentum
A 1.0 kg body, initially at rest, is acted on by the horizontal force shown in the graph. What is its speed in m/s when t=8 s?
momentum
How can you increase the linear momentum of something?
momentum impulse
A boxer quickly learns to move his head backward when he sees he is going to receive a jab to the head. What does this head motion accomplish?
momentum impulse
A heavy object and a light object have the same momentum. Which has the greater speed?
momentum, impulse
A heavy truck has more momentum than a passenger car moving at the same speed because the truck
impulse
A soccer player applies an average force of 180 N during a kick. The kick accelerates a .45 kg soccer ball from rest to a speed of 18 m/s. What is the impulse imparted to the ball? What is collision time?
Particle m1 with mass of 4×10−254 \times 10^{-25}kg is travelling with a velocity of 5msi^5\frac{m}s\hat i , and collides with particle m2 with mass 6×10−25 kg6\times 10^{-25}~\rm kg which is initially at rest. After the interaction, m1 travels with speed of 5 m/s at an angle of 45 degrees with vector.
What is the total momentum of the system?
What is the vector velocity of m2?