If a 0.50 kg ball is moving at a speed of 12 m/s what is the kinetic energy of the ball? Equation is KE= 1/2 mv2 a. 3.0 J b. 36 J c. 48 J

Starting from rest, a ball of mass 3 kg experiences a constant force of 12 N. What is the final kinetic energy (in J) of the ball after it has traveled a distance of 2 m? A. 6J B. 24) O C. 4J D.72) E. 36J

If the speed of a particle is doubled, what happens to its kinetic energy? a. It will be half. b. It will be square root of twice as large. c. It will be four times bigger. d. It does not change e. It will be twice as big.

QUESTION 11 Starting from rest, a ball of mass 3 kg experiences a constant force of 9 N. What is the final kinetic energy (in J) of the ball after it has traveled a distance of 8 m? A. 216J B, 72J C.3J D. 24J E, 27J

An object with mass m and a velocity v. What happens to Kinetic Energy when velocity is doubled? a. stays the same  b. quadrupled  c. halved d. doubled e. not enough info

3. Which of the following statements correctly describes the relationship between an objects kinetic energy and its speed? a. E k is directly proportional to the speed of the object b. E k is directly proportional to the speed squared of the object c. E k is inversely proportional to the speed of the object d. E k is inversely proportional to the speed squared of the object e. none of the above describe the relationship

A rubber ball with mass 0.3 kg is dropped vertically from a height of 1.5 m above a floor. The ball bounces off the floor, and during the bounce 0.60 J of energy is dissipated due to friction (thermal energy). What is the total energy of the system? A.4.5 J B.1.2 J C.1.3 J D.0.20 J

5. After: 30⁰ Before: 2 1 2 V' m₁ = 2 kg m₂ = 3kg h = 50 cm Mass 1 is released from rest from height hand slides down a frictionless 30° slope then collides with mass 2. The two masses then stick together and move as a unit on the horizontal ground. a. What is the speed of mass 1 at the bottom of the slope just before it hits mass 2? b. Mass 2 is initially at rest at the bottom of the slope. Mass 1 now collides with mass 2. Find the speed of the combined masses after the collision. c. How much energy was lost in this collision?

Dr. B is bouncing a 0.245 kg playground ball in his office one day. He drops the ball from a height of 1.2 m, but the ball only bounces up to 70% its initial height. How much work does the floor do on  the ball? a. -1.04 J b. -0.86 J c. -0.69 J d. -0.43 J e. -1.21 J

If you have a ball with a mass of 6.00kg, that has an initial velocity of vA=(2.00i + 5.00j)m/s and a final velocity of vB=(-2.00i + 8.00j)m/s, What is the Work done on the ball if the work only changes the kinetic energy?   a. 234 Joules   b. 117 Joules   c. 93 Joules   d. -13 Joules   e. 95 Joules