An object has a kinetic energy of 225 J and a linear momentum of magnitude 30 kg m/s. Find the mass of the object (in kg). а. 2 b. 3 с. 1 d. 4

A Vulcan spaceship has a mass of 6.50 × 104 kg and a Romulan spaceship is twice as massive. Both have engines that generate the same total force of 9.50 × 106 N. If each spaceship fires its engine for the same amount of time, starting from rest and ignoring any change in mass due to whatever is expelled by the engines, calculate the energy of the Vulcan spaceship if the engines are fired for 102 s.

A sprinter with a mass of 79 kg reaches a speed of 8 m/s during a race. Find the sprinter's linear momentum (in kg • m/s). (Enter the magnitude.) kg • m/s

9) An object of mass 2 kg has a linear momentum of 6 kg. m /s. What is this objects Kinetic energy? z kg 6 kg m/s >

A pickup truck (2,200 kg) and a compact car (1,100 kg) are moving so that they have the same momentum. What is the ratio of their kinetic energies? Explain how you figured this out. Thili TO

The conservation of energy equation used in the answer was: Conservation of momentum: m1v1 = m1vf1 + m2vf2I believe the conservation of energy equation is:m1v1 + m2v2 = m1vf1 + m2vf2Therefore the answer should be 1.17 m/s.Am I correct? Can someone check my work please

A 9,700-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 in J.

4. You need to show your work in detail to get any credit. Before collision: The red car (on the left) has the velocity of 10.0 m/s and mass of 4.8 kg. The blue car (on the right) has the velocity of -5.6 m/s and mass of 4.4 kg. After elastic collision: The blue car moves with the velocity of 8.8 m/s. (a) What is the initial momentum of the red car? (b) What is the initial momentum of the blue car? (c) What is the total momentum of the system of blue and red car before collision? (d) What is the final momentum of the blue car? (e) What is the impulse on the blue car (in kg.m/s)? (f) Is the system consisting of the blue and red car an isolated system? (g) What is the impulse on the red car (in kg.m/s)? (h) What is the velocity of the red car after the collision? (i) Draw annotated p-t and F-t graphs for both carts at all stages of collision. Assume that collision occurred for 0.5 seconds. Before Р Ft During +X After 24 t 4 t