A hammer has a mass of 2.0kg and is moving horizontally at a speed of 6.0 m/s when it strikes a nail, driving it 2 cm farther into a piece of wood.   a. What was the kinetic energy of the hammer? b. What is the average force exerted on the nail by the hammer?

A diver of mass 68 kg stands on a diving board 5.0 m above a pool. At the moment of the jump, the diving board transfers its 3400 J of energy to the diver, who leaves the board at an angle of 35°. a. What is the (total) speed of the diver just as they leave the diving board? b. What is the maximum height (relative to the surface of the water) of the diver? c. How long does it take for the diver to reach the surface of the water?

A 4 kg block moving right at 6 m/s collides elastically with a 2 kg block moving right at 3 m/s. Calculate the final kinetic energy. What is the velocity of a 10 kg object move if an average power of 120 watts is used and the applied force is parallel to the surface? 1.22 m/s 12.2 m/s 0.82 m/s 102 m/s 82 m/s

1. The sledder shown in figure starts from the top of a frictionless hill (Point A) with an initial speed of 30 m/s and slides down into the valley. What is the final speed at the top of the next hill (Point B)? 30 m/s A 100 m 130 m O 30 m/s We cannot solve this problem without knowing the mass of the sledder. O 17.7 m/s O 12.5 m/s O 23.8 m/s

A father racing his son has 1/2 the kinetic energy of the son, who has 1/2 the mass of the father. The father speeds up by 1.8 m/s and then has the same kinetic energy as the son. What are the original speeds of (a) the father and (b) the son?

as: 2 QUESTION 9 Block A, with a mass of 10 kg, rests on a 35° incline. The coefficient of static friction is 0.40. An attached string is parallel to the incline and passes over a massless, frictionless pulley at the top. The largest mass of block B attached to the dangling end, for which A remains at rest is: OA.5.9 kg OB. 2.5 kg OC. 10.5 kg OD.9.0 kg O E. 3.5 kg inetic energy of the son, who has 1/4 the mass of the of the father and the son, respectively? nswers to save all

A father racing his son has 1/2 the kinetic energy of the son, who has 1/3 the mass of the father. The father speeds up by 1.3 m/s and then has the same kinetic energy as the son. What are the original speeds of (a) the father and (b) the son?

QUESTION 10 A father racing his son has 1/2 the kinetic energy of the son, who has 1/4 the mass of the father. The father speeds up by 1.7 m/s and then has the same kinetic energy as the son. What are the original speeds of the father and the son, respectively? OA 1.4 m/s and 2.8 m/s OB.4.8 m/s and 10.2 m/s OC.4.1 m/s and 11.6 m/s OD.3.3 m/s 11.6 m/s OE. 4.1 m/s and 8.3 m/s moving object is equal to the