In a collision, a 1200 kg car initially moving at 30 m/s comes to a stop in 0.5 second. The magnitude of the average force (in kN) on the car during the crash is:

A.3 kg ball bounces off the ground. Before the bounce it had a velocity of 8 m/s in the x direction and -17 m/s in the y direction. After the bounce it had a velocity of 8 m/s in the x direction and 9 m/s in the y direction. If the collision lasted 0.062 seconds, what is the magnitude of the average net force on the ball while it was colliding with the ground in N? You can neglect gravity.

Two clay balls collide and stick. Ball 1 has a mass of 10 kg and an initial velocity of 5 m/s in the positive x direction. Ball 2 has a mass of 20 kg and an initial velocity of 5 m/s in the negative x direction.   What is the final velocity of the combined mass?

Block A and block B move toward each other on a level frictionless track. Block A has mass m and velocity +v . Block B has mass 2m and velocity -v . The blocks collide, and during the collision the magnitude of the net force exerted on block A is F. What is the magnitude of the net force exerted on block B, and why does it have that value?

A car with a mass of 1850kg is traveling east with a speed of 8.5m/s. It collides head-on with a car with a mass of 2050kg traveling west with a speed of 5.5m/s. The cars stick together after the collision. What is the velocity (magnitude and direction) of the two cars after the collision?

A 0.25 kg ball moving at 16.0 m/s is hit by a bat.  The ball leaves the bat at a speed of 46 m/s in the opposite direction.  If the bat is in contact with the ball for 0.01 s, find the magnitude of the average force exerted on the ball by the bat.

A golf player swings a golf club, striking a golf ball that has a mass of 55.0 g. The club is in contact with the ball for only 0.00460 s. After the collision, the ball leaves the club at a speed of 37.0 m/s. What is the magnitude of the average force (in N) exerted on the ball by the club?

A baseball pitcher throws a 143 g baseball at a velocity of 27 m/s towards home plate. The batter hits the ball, and the velocity of the ball coming off the bat is 48 m/s in the opposite direction of the velocity of the pitch. The bat is in contact with the ball for 0.004 seconds. What is the magnitude in Newtons of the average force applied to the ball?

A 47.0 kg boy stands on a sled that is stopped in the middle of a frozen pond. The boy jumps horizontally off the sled with a velocity of 2.40 m/s. The sled moves in the opposite direction with a velocity of −11.1 m/s. What is the mass of the sled?

A 5.0 g bullet moving 325 m/s is shot into a 1.25 kg block, which slides for 1.35 seconds across the surface it is on before coming to rest. What is the average force of kinetic friction between the block and the surface?