P2 Revision

What is the unit of force?

The newton, N
What happens to a moving object if the resultant force on it is zero?

It keeps moving
What happens to a moving object if the resultant force on it is not zero?

If the resultant force on an object is not zero it speeds up in the direction of the resultant force
If we double the resultant force applied to an object, what happens to its acceleration?

If we double the resultant force applied to an object its acceleration doubles
What happens to a stationary object if the resultant force on it is zero?

It stays still
In which direction does friction act?

Friction acts in the opposite direction as the direction of movement
Which force causes objects to fall?

Weight, due to gravity, causes objects to fall
When an object reaches terminal speed:

The vertical forces on it are balanced
On the Moon, if a hammer and feather were dropped together:

Both objects hit the surface at the same time
A parachutist on the Moon would never reach a terminal speed because:

There is no air on the Moon

Author

CourtneyOsborn01

330844

Card Set

P2 Revision

Description

Revise!!!!!

Updated

2017-04-27T12:37:31Z

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