How much does Karen weigh? (g = 10N/kg)
650N
What causes the Earth's tides?
The gravitational pull of the moon
How can the drifting astronaut get back to the shuttle (has no thrusters in their suit)
Throw the hammer away from the shuttle, the equal and opposite force will send them back to the shuttle.
Is Energy a scalar or vector quantity?
Scalar (only has size)
Is friction a contact or non contact force?
Contact
Is gravity a contact or non contact force?
Non contact
Is the magnetic force a contact or non contact force?
Non contact
When two like charges approach, they feel a force of attraction or repulsion?
Repulsion
What is Newton's 2nd Law?
F = m x a
Define acceleration
Acceleration is the rate of change of velocity
What is the resultant force on this trolley and in which direction?
30N right
What is the resultant force on this trolley and in which direction?
20N right
What is the resultant force on this trolley and in which direction?
0N
