02 Motion & Force

An athelete run a distance of 250 m in 10 s. what was his average velocity?

• 250 m/s

• 25 m/s

• 2.5 m/s

• 0.25 m/s

A car has velocity 70 km/hour and take 1.5 hours to arrive at destination. Calculate the distance in km!

• 70

• 100

• 105

• 140

Nayef ride a bike with velocity 115 m/s , the distance is 5175 m. Calculate time in second!

• 30

• 35

• 40

• 45

A motorbike accelerates from 55 m/s to 72 m/s in 10 s. what its acceleration m/s2?

• 0.17

• 1.7

• 17

• 170

A policeman accelerates his motorbike to chase criminals from a stop to a velocity of 175 m/s in an interval of 5 seconds. Calculate the acceleration of motor in m/s2!

• 35

• 25

• 15

• 5

Below are effects of force, except ...

• change shape

• make objects move

• change direction

• change mass

What is the unit of force?

• kg m/s2

• kg

• m

• pascal

What is the example of contact force?

• play tug of war

• electricity in lamp

• gravitational force

• magnetic force

What is called force that occur without direct physical contact between two objects?

• contact force

• non contact force

Rowing a boat is an example of ... Newton's Law

• 1st

• 2nd

• 3rd