Question

velocity time graph of a 50 gram marble rolling on floor in given below find-

1. time in which it stops
2. negative acceleration produced on it.
3. positive force acting on the marble​​

Answer 1

Answer:

1. Time is 25 seconds

2. Negative acceleration is 1.2 m/s²

3. Positive force is 60N

Explanation:

2. Initial velocity, u=30m/s

Final velocity=0 m/s

Time, t=25s

Using the first equation of motion,

Acceleration =(v-u)/t= (0-30)/25 = -1.2 m/s²

3. If mass of the marble is 50g, force can be calculated using

F=ma = -1.2×50=-60N

Answer 2

Explanation:

1. 25 second

2. -1.2 metre per second

3. 0.06 N