Section 1 - General Physics, Force And motion

Question 1

What is the principle of moments?

Answer 1

If an object is balanced then the total anti-clockwise moment is equal to the total clockwise moment

Question 2

What is equilibrium?

Answer 2

When an object has no result force or resultant moment acting on it

Question 3

What is the equation for a moment?

Answer 3

M = Fd
Moment = force x distance

Question 4

What is the equation for momentum?

Answer 4

p = mv
Momentum = mass x velocity

Question 5

What is the principle of momentum?

Answer 5

The principle,e of conservation of momentum says that the momentum before a collision is equal to the momentum after the collision if no external forces act

Question 6

What is an impulse?

Answer 6

Impulses are the change in momentum of an object on which forces act

Question 7

What is the impulse word equation?

Answer 7

Impulse = change in force x time = change in momentum

Question 8

What is impulse measured in?

Answer 8

Ns or Newton seconds