Newton's first law of motion

Which type of force(s) will cause change in an objects motion?

• Gravity

• Zero net force

• Balanced force

• Unbalanced force

Inertia is........

• The force that keeps us on the earth

• Resistance to change in motion

• Force of gravitational pull

_____is an objects speed in a given direction

• Friction

• Motion

• Speed

• Velocity

People sitting in a moving bus experience a jerk when the bus stops. This is due to____

• Inertia of motion

• Inertia of rest

• Inertia of direction

• Inertia of acceleration

In the following figure, what will happen to the ball hanging from the roof of the car suddenly moves towards left(direction shown by an arrow)?

• Ball moves toward right

• Ball moves towards left

• Ball does not move

• Ball moves out of the paper

A straight moving bus takes a sharp right turn. What will happen to the passengers sitting inside the bus?

• They will tilt rightwards

• They will tilt towards leftwards

• They will stay the way they were

• They will start jumping

What is the weight of a 70 kh man on the earth ?

• 686 N

• 500 N

• 496 N

• 800 N

What net force is required to keep a 500kg object moving with a constant velocity of 10m/s?

• 5000N

• 10 N

• 0 N

• 500 N

You are traveling on an aeroplane at constant speed of 650 m/s. Your friend is traveling I his car at a constant speed of 60m/s. Who will experience larger acceleration?

• Neither you nor your friend

• You

• Your friend

• Me

A passenger in an elevator has a mass that exerts a force of 100 N downwards. He experiences a normal force upwards from the elevators floor of 120 N . What is the magnitude and direction of his acceleration?(take g=10m/s²)

• 10 m/s² downwards

• 2 m/s² upwards

• 5 m/s² upwards

• 2.5 m/s² upwards