On a aircraft carrier, a fighter jet goes from rest to a velocity of 250 mph (miles per hour) when it takes off. It does this in 3 seconds. What is it acceleration ?

37.25m/s

Explanation:

Acceleration is the change in velocity of an object with respect to time.

Acceleration = velocity/time

Given

Velocity = 250mi/hr

Convert to m/s

1mile = 1609.344m

1hr = 3600s

250mi/hr = 250mi * 1609.344/1 * 3600

250mi/hr = 402366/3600

250mi/hr = 111.76m/s

Time = 3 seconds

Get the acceleration:

Acceleration = 111.76/3

Acceleration = 37.25m/s

Hence the acceleration is 37.25m/s

The action – reaction pair of forces act on the same object with the instance of force applied. When we push the door, we apply action, and in response to which the door opens.

Explanation:

The third law of motion given by Newton was that “to every action, there is an equal and opposite reaction”. This explains the most phenomenal action undertaken on Earth.

For example, in the case given, when we pushes the door, the door is the object on which an action has been caused with force of push. In response the door, if would have been locked or stationary in action, would apply equal and opposite reactions on the person.