year 10 forces

Which statement is true about a moving object?
When an object is ....

• ...accelerating, the resultant force acting on it must be zero
• ... moving at a steady speed, the air resistance acting on it must equal zero
• ... moving at a steady speed, the resultant force acting on it must equal zero
• ... moving, there must be a resultant force acting on it.

Which quantity is measured in newtons?

• density
• energy
• pressure
• weight

Two forces act on an object.
In which situation is it IMPOSSIBLE for the object to be in equilibrium?

• The two forces act in the same direction
• The two forces act through the same point
• The two forces are of the same type
• The two forces are the same size

Wind blowing at 20 mph.Vector or scalar?

• Scalar
• Vector

30 m/sec, East. Scalar or Vector

• Scalar
• Vector
• Neither

Sara walks from Point A to Point B. Which is true?

• Distance and displacement are EQUAL
• Distance is less than displacement

The tendency of an object to resist changes in its motion is...

• inertia
• force
• acceleration
• velocity

What is the force that pulls us towards the Earth?

• gravity
• weight
• friction
• mass

What is 'drag' another name for?

• dressing up
• air resistance
• friction
• weight

Name two quantities that are vectors.

• force and speed
• speed and acceleration
• force and acceleration
• mass and weight