1. calculate the speed for a car that went a distance of 125 kilometers in 2 hours time.

The speed of the car is 62. 5 kilometer per hour  

Explanation:

Speed is a scalar quantity that has magnitude but no direction. Speed is said to be the rate an objects cover a distance. Speed is the distance covered by an object divided by the time used. The speed of the car can be represented mathematically as

speed = distance covered/time

Distance = 125 km

time = 2 hrs

speed = 125/2

speed = 62.5

speed = 62.5 km/hr

The speed of the car is 62. 5 kilometer per hour  

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explanation:

we need to know the time interval during which the force acts. impulse of force = momentum change