A 65 kg hunter, standing on frictionless ice, shoots a 30 g bullet at a speed of 700 m/s.  What is the recoil speed of the hunter? Draw a before and after diagram, define the system that you will use in the problem, write Newton's second law  in terms of momentum, solve for the final answer symbolically, and finally plug in.

Problem 9.34 A0.060-kg tennis ball, moving with a speed of 5.8 m/s , has a head-on collision with a 9.5x10-2-kg ball initially moving in the same direction at a speed of 2.7 m/s. Part A Assuming a perfectly elastic collision, determine the speed of each ball after the collision. Enter your answers numerically separated by a comma. Express your answers using two significant figures. Hνα ΑΣφ ? m/s 'tennis ball Vhall= Submit Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining Part B Determine the direction of tennis ball after the collision. The tennis ball moves in the direction of its initial motion. The tennis ball moves in opposite direction. Subm Previous Answers v Correct Part C МacВook Pro

If momentum is conserved in a collision, does this indicate conclusively that the collision is elastic? Explain. A.Yes, momentum is conserved only in an elastic collision. B. No, momentum is conserved only in inelastic collisions.     C  No, momentum is conserved in all collisions, elastic or inelastic.

A 3.4 kg block of wood sits on a frictionless table. A 3.0 g bullet, fired horizontally at a speed of 480 m/s, goes completely through the block, emerging at a speed of 250 m/s. Part A What is the speed of the block immediately after the bullet exits? Express your answer with the appropriate units. V= Value Submit μA Provide Feedback Request Answer Units ? 208

Part A (Figure 1)is an incomplete momentum bar chart for a collision that lasts 11 ms What are the magnitude and direction of the average collision force exerted on the object? Assume that the object is initially moving to the right. You may want to review (Pages 262 - 266) . Express your answer to two significant figures and include the appropriate units. Enter positive value if the force is directed to the right and negative value if the force is directed to the left. Figure 1 of 1 kg m/s 6. 4 2 -2 Pix + J, = Pir

The train car on the left with mass m1 is moving with speed V1i=24.0 m/s when it collides with a stationary car with mass m2. The two stick together and move with velocity V.a. Write initial momentum of the system by using symbols only?b. Write final momentum of the system by using symbols only? c. Use momentum conservation and solve for unknown v by using symbols? d. Calculate V if m1=m2?e. Show that the collision is inelastic?

At an amusement park, Keenan is in a 96.0 kg bumper car moving to the right at a speed of 3.50 m/s. He collides with his friends who are in a 135 kg bumper that is at rest. Keenan bounces backward at a speed of 1.25 m/s.  a. What is the new velocity (magnitude and direction) of his friends?  b. Calculate if kinetic energy is conserved during this collision.

A small, 150 g cart is moving at 1.70 m/s on a frictionless track when it collides with a larger, 5.00 kg cart at rest. After the collision, the small cart recoils at 0.890 m/s. Part A What is the speed of the large cart after the collision? Express your answer with the appropriate units. V= 00 Submit μA Value Request Answer Units ?

Ⓒ Macmillan Learning Two particles approach each other with equal and opposite speed, v. The mass of one particle is m, and the mass of the other particle is nm, where n is just a constant factor. Snapshots of the system before, during, and after the elastic collision are shown. m V Before V What is the value of n? nm Collision V m,final m n = After the collision, the first particle moves in the exact opposite direction with speed 2.40v, and the speed of the second particle, Unm, final, is unknown. 68 After Incorrect nm nm,final

You are standing at a stop light waiting to cross the street when you witness a collision. A 2,300 kg Ford F150 truck collides head on with a 1,300 kg Toyota Corolla. The Ford F150 is moving to the right immediately before the collision and the Corolla is initially moving to the left. The two vehicles have the same initial speed and vehicles stick together after the collision. A. What type of collision is this? B. Which vehicle will experience the greater change in momentum? C. Which vehicle will experience the greater acceleration?