12. A father racing his son has half the kinetic energy of the son, who has half the mass of the father. The father speeds up as the son. What are the original speeds of (a) the father and (b) the son? 1.0 m/s and then has the same kinetic energy

Consider the table.   Vehicle 1 Vehicle 2 Vehicle 3 Vehicle 4 Mass (kg) 1000 2000 1000 2000 Velocity (m/s) 20 20 40 40 Kinetic energy (kJ) 200 400 800 1600 The table shows data collected for some vehicles on the road. What conclusion can be drawn about the relationship between mass, velocity, and kinetic energy?   Answer Choices: a. If only the mass of the vehicle doubles, the kinetic energy increases by a factor of four. b. If both the mass and the velocity of the vehicle double, the kinetic energy will increase by a factor of eight. c. If only the velocity of the vehicle doubles, the kinetic energy will double. d. If both the mass and the velocity of the vehicle double, the kinetic energy will increase by a factor of four.

7. Car 1 has half the mass of car 2, but they both have the same kinetic energy. If the speed of car 1 is v = 10.0 m/s, what is the speed of car 2?

This graph shows the net force on a particle as a function of its position. The mass of the particle is m = 1.5 kg 1. If the particle has a velocity of the X equals -4.5 m/s when X = 0m what is the particles speed when x=3.0m? 2. At what value of X (in meters) does the particle have the maximum kinetic energy? 3. What is the particles maximum kinetic energy?

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?

A 0.500 kg bullet is fired from a gun at 25.0 m/s, how much kinetic energy does it have? 156.3 156.25 J 156 J 156.3 m

Releasing some frustration at the end of the semester, you throw your physics book (mass of 4.3 kg) off of a 24 m tall building. You throw your book so that it has a speed of 3 m/s right after you let go. What is the kinetic energy of your book after you let go? (in J) 12.9 1.01×103 206 0 19.4 How how fast is your textbook moving right before it lands? For now, ignore friction. (in m/s) 21.9 17.5 24.7 21.5 If friction is NOT negligible, and 350 J of the textbook's energy is converted to thermal energy as it falls, how fast is it moving just before it lands? (in m/s) 17.8 17.5 12.8 25.3 25.0

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?