Refer to the block on a flat surface shown below. A force F is applied to the bl
ID: 1623304 • Letter: R
Question
Refer to the block on a flat surface shown below. A force F is applied to the block as shown. With an applied force of 3.0 N, the block moves with a constant velocity. Explain how the block can move with a constant velocity even though it has a force applied to it. Is Newton's first law violated? Approximately what applied force is needed to keep the block moving with a constant velocity that is twice as large as before. Explain. Suppose that instead of the force of 3.0 N, a force F of 1, 5 N is applied to the block. The block starts at rest. Sketch on the axes the shape of the acceleration-time and velocity-time graphs for the block A superball of mass 0.30 kg is dropped from a height of 20 cm above a tabletop. It bounces off the table and rises to the same height. If the superball was in contact with the table for 40 msec, calculate the average force exerted on the ball by the table? Show your work.Explanation / Answer
4 when there is other force acting on the same body which is same in magnitude and opposite in direction, then the box will move with constant velocity. Here friction is acting opposite to applied force so the box is moving with constant force. so it is not violating Newtons law.