¿En qué tiempo adquirirá un cuerpo una velocidad de 45 km/h si parte con una velocidad de 18 cm/s y se mueve con una aceleración de 4 cm/s2?

According to newton’s first law of motion, which force is expected to cause a body to accelerate?

Abowling ball rolling down the lane toward the pins has gravitational potential energy. a. no b. a lot of c. a little

Arailroad car collides with and sticks to an identical railroad car that is initially at rest. after the collision, the total kinetic energy of the two cars is a) the same as before. b) half as much as before. c) one third as much as before. d) one fourth as much as before. e) twice as much as before.