Yr 10 Physics

A woman lifts 20 bricks, each of weight 6N.
What other information is needed to calculate the useful work done in lifting the bricks?

• the distance she lifts the bricks
• the mass of the bricks
• the time taken to lift the bricks
• the volume of the bricks

Tags

NGSS.MS-PS3-5

How far does the car travel before it reaches a steady speed?

• 10m
• 20m
• 100m
• 200m

Tags

NGSS.HS-PS2-1

In a race, a car travels 60 times around a 3.6km track. This takes 2.4 hours. What is the average speed of the car?

• 1.5 km/h
• 90 km/h
• 144 km/h
• 216 km/h

Which is true from Newton's Third law of motion?

• For every action force there is a smaller reaction force in the opposite direction.
• For every action force there is an equivalent reaction force in the opposite direction.
•  Both 1 and 2
• None of the above

Tags

NGSS.MS-PS2-1

What is Newtons 2nd law?

• equal&opposite force
• law inertia
• f=ma

Tags

NGSS.MS-PS2-2

When forces on an object are balanced, what is the force?

• Five
• Ten
• Six
• Zero

How can you increase the acceleration of an object?

• decrease its mass
• increase its friction
• increase its mass
• decrease the force applied to it

Tags

NGSS.MS-PS2-2

What does this graph represent?

• Constant Speed
• Acceleration
• Not moving

Tags

NGSS.MS-PS3-1

Total distance divided by total time is

• average speed
• constant speed
• instantaneous speed
• acceleration

______ measures an object's tendency to resist changing its motion.

• Acceleration
• inertia
• Gravity
• weight