normal and weight forces simplified

Multiple Choice

A measure of how much matter in an object is called

• weight
• gravity
• mass
• volume

Multiple Choice

Which is the unit for force and which is the unit for weight?

• F = kg, W = kg

• F = kg, W = N

• F = N, W = kg

• F = N, W = N

Multiple Choice

Convert 2500 grams to kilograms

• 2.5 kg

• 2,500,000 kg

• 24.5 kg

• 255

Multiple Choice

The mass of an astronaut is 70 kg on the Moon.

What is the mass of the astronaut on the Earth?

• 7 kg

• 70 kg

• 80 kg

• 700 kg

Multiple Choice

A squirrel sits on the ground and eats a donut. We know the forces on him must be balanced because...

• Forces are always balanced

• the squirrel is not accelerating

• squirrels are projectiles

• he's eating a donut

Multiple Choice

Normally this animal is called

• ocelots

• leopard

• margay

• lazy cat

Multiple Choice

Name the missing force...

• weight force
• normal force
• buoyant force
• applied force

Multiple Choice

The force that pulls objects towards Earth.

• Gravity
• Friction
• Inertia
• Force

Multiple Select

This FBD shows the object has no net force and hence no acceleration.  This means... (TWO correct answers)

• a object at rest

• an object moving at a constant velocity (speed)

• an object accelerating

• (Trick question -- there is only one correct answer)

• an object decelerating

Multiple Choice

In a force diagram the size/length of the arrow tells you this about the force:

• the magnitude of the force

• the distance of the force

• the direction of the force

• the units of force

Multiple Choice

The force that keeps objects on top of surfaces instead of letting them sink into the surface is known as:

• normal

• abnormal

• static

• inertia

Multiple Choice

What other rooms can you find Dr.V?

• dungeon

• rm 180

• dean's

• basement

Multiple Choice

IF you fall through a roof, which force was larger?

• weight

• mass

• normal

• applied

Multiple Choice

Which is the correct eqn for an elevetor going up but slowing down?

• Fn - Fg = 0

• Fg-Fn=ma

• Fn-Fg=ma

• Fg-Fn=0

Multiple Choice

Find the mass of a 5kg rock on Mercury with a gravitational pull of 3.59m/s/s.

• 5kg

• 17.95N

• 1.39N

• 0.718N

Multiple Choice

You have a ball with a weight of 76N. What is the mass of the ball?

• 76N

• 76kg

• 7.6kg

• 7.6N

Multiple Choice

Find the weight of a 20g object on Earth

• 200N

• 20g

• 0.2N

• 0.02kg

Multiple Choice

A man pushes a 50kg box at a constant velocity to the left with a force of 200N.

What is the net force?

• 50kg

• 200N right

• 0N

• 200N left

Multiple Choice

A man pushes a 50kg box at a constant velocity. He applies a force of 200N to the left.

Find the normal force

• 50kg

• 200N

• 500N

• 50kg

Multiple Choice

A man pushes a 50kg box at a constant velocity. He applies a force of 200N to the left.

Calculate Fg

• 50kg

• 200N

• 500N

• 20kg