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Particle m1 with mass of 4 10^-25kg is travelling with a velocity of 5ms i , a…

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

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

Two-Dimensional Linear Momentum Conservation

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Wize University Physics Textbook (Master) > Introduction to Vectors

Vectors and Their Components

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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.
  1. What is the total momentum of the system?
  2. What is the vector velocity of m2?
  3. If the collision took place in 0.5 s, what is impulse on each particle?
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.
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?
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?
More Two-Dimensional Linear Momentum Conservation Questions:
A kid is stationary on a frozen lake when the friction between his shoes and the lake could be neglected. He tosses simultaneously a ball with a mass of 2kg toward North at speed of 2m/s and a toy with mess of 1kg toward West at the speed of 5 m/s. What is the speed of the kid after throwing the ball and the toy? (assume the boy weighs 30kg)
A bowling ball with mass of 1 kg travelling at 0.75 m/s hits a 0.5 kg bowling pin, initially at rest. The bowling pin moves off with a speed of 0.25 m/s at an angle of 35º relative to the initial direction of the bowling ball. What is the final velocity of the bowling ball? (note: you cannot assume kinetic energy is conserved).
A radioactive atom at rest with a mass of 100×10−27 kg100\times 10^{-27}~kg is decaying to three particles with masses of 25×10−27 kg25\times 10^{-27}~kg , 40×10−27 kg40\times 10^{-27}~kg and 35×10−27 kg35\times 10^{-27}~kg respectively. Assume that all three particles remain in x-y plane. If the first particle is moving in the direction of positive y axis at speed of 20m/s and the second particle moves in the direction of 25 degree clockwise respect to positive x-axis at speed of 15 m/s, what is the angle and speed of the of the third particle?
More Vectors and Their Components Questions:
Practice: Magnitude of a Vector
Practice: Magnitude of a Vector
An aircraft's location is 200 miles from base, at a direction of 30° W of S, at an altitude of 35,000 ft. Find the distance between the aircraft and the base.
Note: 1 mile = 5280 feet
I'm moving and packed all my books into a box that weighs 17kg. I pull the box on a weightless dolly with a force of 60N at an angle of 30° to the horizontal surface.
a) What is the acceleration of the box?
b) The box feels the normal force from the ground and the force of gravity. Are the normal force and gravity an action-reaction pair? Explain your answer!
Vector arithmetic practice
Consider the vectors a⃗=−2i^+3j^−k^;   b⃗=4i^+3k^;   c⃗=−i^+3j^−k^\vec a=-2\hat i+3\hat j-\hat k; ~~~\vec b= 4\hat i+3\hat k; ~~~ \vec c=-\hat i+3\hat j-\hat k.
a) For each of these three vectors, find the magnitude.
b) For each of these three vectors, find a unit vector pointing in the same direction.
Component vectors practice
You try to pull a heavy box by attaching a rope and pulling with a force of 20.0 N at an angle of 13.4 degrees above horizontal. What are the components of this force in the horizontal and vertical directions? Draw a diagram to support your answer.
A rabbit, escaping a fox, runs 40o north of west at 10.0m/s. A coordinate system is established with the positive x-axis to the east and the positive y-axis to the north. Write the rabbit’s velocity in terms of components and unit vectors.
Break into components
Given a velocity of 5.0m/s at 40.0o above the -x axis:
Which of the following is an example of a vector quantity?
Which of the following operations will not change a vector?
Practice Vector Components
Find horizontal and vertical components of a vector R shown in the Figure.
A bowling ball with mass of 1 kg travelling at 0.75 m/s hits a 0.5 kg bowling pin, initially at rest. The bowling pin moves off with a speed of 0.25 m/s at an angle of 35º relative to the initial direction of the bowling ball. What is the final velocity of the bowling ball? (note: you cannot assume kinetic energy is conserved).