3,400-kg truck runs into the rear of a 1,000-kg car that was stationary. The truck and car are locked together after the collision and move with speed 2( m)/(s). Compute how much kinetic energy was "lost" in this inelastic collision.

Bullet of mass 105 grams, hits the stationary block of mass 15,190g (originally frictionless surface) and embeds in it. The block then enters a rough surface (coefficient of friction= 0.30) by a distance of 9.0 meters, before coming to stop. Find the speed of the bullet when it hits the block. Use g = 9.8 m/s2 and state your answer in m/s to the nearest tenth of m/s.

A 38.0 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a speed of 22.0 m/s. If the player was moving upward with a speed of 2.70 m/s just before impact.  (d) What will be the speed of the ball immediately after the collision if the ball rebounds vertically upwards and the collision is elastic? (Note that the force of gravity may be ignored during the brief collision time.) A 38.0 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a speed of 22.0 m/s. If the player was moving upward with a speed of 2.70 m/s just before impact.  (e)  If the ball is in contact with the players head for 49 ms, what is the average acceleration of the ball? (Note that the force of gravity may be ignored during the brief collision time.) A 38.0 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a speed of 22.0 m/s. If the player was moving upward…

A 0.240-kg billiard ball that is moving at 3.00 m/s strikes the bumper of a pool table and bounces straight back at 2.40 m/s (80% of its original speed). The collision lasts 0.0150 s. (a) Calculate the average force exerted on the ball by the bumper. (b) How much kinetic energy in joules is lost during the collision? (c) What percent of the original energy is left?