Abicycle takes 8.0 seconds to accelerate at a constant rate from rest to a speed of 4.0 m/s. if the mass of the bicycle and rider together is 85 kg, what is the net force acting on the bicycle

Arocket starts from rest and moves upward from the surface of the earth. for the first 10.0 s of its motion, the vertical acceleration of the rocket is given by ay = 12.80 m/s32t, where the +y-direction is upward. (a) what is the height of the rocket above the surface of the earth at t = 10.0 s? b) what is the speed of the rocket when it is 325 m above the surface of the earth?

If there's a small amount of friction between two surfaces, the result could be select all that applya. no movement b. heatc. a little bit of movementd. sliding around

Achild has maximum walking speed of 1.6 m/s. what is the length of the child's legs? 0.26 m