Question

Observe the following v-t graphs and explain the type of force acting in the cases given:

Answer 1

Slope in the velocity versus time graph is acceleration and hence it is due to application of force. 

a) The slope is constant, so the force is constant and is acting in the direction of motion. 

b) The force acting on the object is zero because there is no velocity change. 

c) The slope is constant, so the force is constant and is acting opposite to the direction of motion.