How fast must a 1000 kg car moving to have a kinetic energy of (a) 2.0 x 10^3 J and (b) 2.0*10^5 J

Which of the following statements does not describe force? a. force causes objects at rest to remain stationary. b. force causes objects to start moving. c. force causes objects to stop moving. d. force causes objects to change direction.?

Describe the motion of a car with an acceleration of - 2 m/s?,

A 2,100 kg car is lifted by a pulley. If the cable breaks at 4.50 m, what is the velocity of the car when it hits the ground

A twin-sized air mattress used for camping has dimensions of 75 cm by 225 cm by 17.5 cm when blown up.

What did the greeks call the mineral they found and why?

You're going to open the door further by giving it a brief, hard push. first, you'll push the door at its center. then, you'll push it near the door knob. both pushes are equally hard, and last the same length of time.

In which phenomenon does Earth's magnetic field play an important part? A retaining gases around Earth to form the atmosphere B. stratifying the atmosphere into layers c. movements of tectonic plates D. spreading of the sea floor E.

Make sure that you spend extra time warming up during - O O A. spring B. cold weather O c. the afternoon O D. a heat wave

Which of these forces could speed up a baseball? A) Applied and Frictional forces B) Applied and Gravitational forces C) Frictional and Gravitational forces

When you are travelling downhill on a roller coaster, you experience a light feeling in your stomach. why?