P1 - Motion

Question 1

What is the difference between a scalar and a vector [2]

Answer 1

A scalar has magnitude only, a vector has magnitude and direction

Question 2

What are the SI units for length? [1]

Answer 2

m

Question 3

What are the SI units for time? [1]

Answer 3

s

Question 4

What are the SI units for mass? [1]

Answer 4

kg

Question 5

What is a centimetre? [1]

Answer 5

10⁻²m

Question 6

What is a millimetre? [1]

Answer 6

10⁻³m

Question 7

What is a micrometre? [1]

Answer 7

10⁻⁶m

Question 8

What is a nanometre? [1]

Answer 8

10⁻⁹m

Question 9

What is a kilometre? [1]

Answer 9

10³m

Question 10

What is a gigametre? [1]

Answer 10

10⁹m

Question 11

Define speed with an equation [2]

Answer 11

The distance travelled per unit time speed = distance / time

Question 12

On a speed time graph what does a horizontal straight line indicate? [1]

Answer 12

Constant speed

Question 13

On a speed time graph what does a straight line with a positive gradient indicate? [1]

Answer 13

Acceleration

Question 14

On a speed time graph what does a straight line with a negative gradient indicate? [1]

Answer 14

Deceleration

Question 15

How can you calculate the acceleration from a speed time graph? [1]

Answer 15

Measure the gradient

Question 16

What does the area under a speed time graph indicate? [1]

Answer 16

The distance travelled

Question 17

On a speed time graph what does a line with a changing gradient indicate? [1]

Answer 17

A changing acceleration

Question 18

What are the SI units for speed and velocity?

Answer 18

Metres per second (m/s)

Question 19

What are the SI units for acceleration?

Answer 19

Metres per second squared (m/s²)

Question 20

What is the formula and charge of an ammonium ion

Answer 20

NH₄⁺ →