A 5.5 kg block of wood resting on a platform was hit by a 12 g of bullet travelling upward with a speed of 1142 m/s. The bullet emerges from the block with a speed of 496 m/s.  What is the height reached by the block relative to its initial position? Use g= 9.8 m/s2 .

A 10-g bullet moving 1000 m/s strikes from below and passes through a 5.0-kg block initially at rest. The bullet emerges from the top side of the block with a speed of 400 m/s. To what maximum height will the block rise above its initial position?   Question 4 options:   1.7 cm   7.3 cm   3.7 cm   4.6 cm   9.3 cm

A baseball of mass 0.145 kg is thrown at a speed of 33.0 m/s. The batter strikes the ball with a force of 22,000 N. The bat and ball are in contact for 0.500 ms. Assuming that the force is exactly opposite to the original direction of the ball, determine the final speed up of the ball. Uf = m/s

The Hulk (200kg of pure angry muscle)collides head-on with a truck (2500kg). If the Hulk was running at 10.0m/s and the truck was moving at 15.0 m/s in the opposite direction, after they stick together, what is their speed (in m/s)? Either the Hulk or the truck needs a negative initial velocity.

An arrow with a mass of 45.3 g is fired vertically into the air at 82.5 ms-1 from a height of 1.41 m. Calculate the speed of the arrow when it reaches a height of 36.3 m.

A swimmer with a mass of 75 kg dives off a raft with a mass of 500 kg. If the swimmer's speed is 4 m/s immediately after leaving the raft, what is the speed of the raft? (A) 0.2 m/s B 0.4 m/s 0.6 m/s D 0.8 m/s (E) 1m/s

You wake up one morning to find yourself in a strange room with opaque walls, and no visible doors or windows. You decide to do some experiments to find out more about your strange situation. Your own body mass is 59.1 kg. This time you drop a ball from a height of 1.93 m and it hits the floor 0.251 s after you drop it. This time you suspect you are on a rocket that has just left the surface of the Earth, and is still not too far above the ground. What do you deduce the rocket s acceleration to be?      82.4 m/s^2      51.5 m/s^2      71.1 m/s^2      61.3 m/s^2

hawkeye shoots an arrow with a mass 35g. the force on the arrow as it is shot through the 25 cm bow is 140f (N) and 0.25 d(m). what is the velocity of the arrow as it leaves the bow

Judy has a mass of 72.0kg and stands on slippery ice. She catches her leaping dog (mass 15.0kg),moving horizontally at 3.00 m/s. What is the speed of Judy and her dog after she catches him?

A 25.0-gram bullet enters a 2.35-kg watermelon and embeds itself in the melon. The melon is immediately set into motion with a speed of 3.82 m/s. The bullet remains lodged inside the melon. What was the entry speed of the bullet? (CAUTION: Be careful of the units on mass.)