A body moving with uniform acceleration has two points (5,15) and (20,60) on the (v t) graphs of its motion. calculate the acceleration

3m/s²

Explanation:

The slope on a velocity time graph represents the acceleration, so if you simply use the slope formula, you can find the acceleration between those two points.

m=rise/run

m=(60-15)/(20-5)

m=45/15

m=3 m/s ² squared (therefore this is your constant acceleration from those two points).

reaction force is 3N

Explanation:

The question is not complete.

From estudyassistant, I've gathered that the action force pushing the air out of the balloon is -3N.

Now,from Newton's third law of motion, it says, for every action, there is an equal and opposite reaction.

Thus, the reaction force will be equal and opposite in direction to the action force.

Thus, reaction force is 3N