Chapter 1

Question 1

What are scalers and vectors?

Answer 1

Scalars are physical quantities with only magnitude. Vectors are physical quantities with both magnitude and direction.

Question 2

What is acceleration and the formula for it

Answer 2

Acceleration is how quickly you’re speeding up. The formula is a=v-u/t

Question 3

What is uniform acceleration and the formula for it

Answer 3

Uniform acceleration is constant acceleration and the formula is v squared - u squared = 2 x a x distance

Question 4

What is the formula for weight

Answer 4

weight= mass x gravitational field strength

Question 5

What is the formula for momentum

Answer 5

Momentum= Mass x velocity

Question 6

What is the conservation of momentum?

Answer 6

In a closed system the total momentum before an event is equal to the total momentum after an event.

Question 7

What is newton’s first law

Answer 7

Newton’s first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.

Question 8

What is newton’s second law

Answer 8

Force = mass x acceleration.

The force is dependent on the mass and acceleration of an object

Question 9

What is newton’s third law

Answer 9

His third law states that for every action (force) in nature there is an equal and opposite reaction

Question 10

What is inertia

Answer 10

An object moving will continue moving and an object at rest will stay at rest unless acted upon by an external force. First law

Question 11

How do you work out force

Answer 11

F= change in momentum/time