Question 1

Select an equation that relates momentum, mass and speed

Accepted Answer

p=mv

Answer

m=pv

Answer

$\frac{m}{p}=v$

Answer

v=pm

Question 2

What is the acceleration of gravity on Earth if you round it to the closest whole number?

Accepted Answer

10 $\frac{m}{s^2}$

Answer

10 $\frac{m}{s^2}$

Answer

98 $\frac{m}{s^2}$

Answer

90 $\frac{m}{s^2}$

Question 3

What does the following symbol means? $\frac{m}{s^2}$

Accepted Answer

difference

Answer

density

Answer

force

Answer

acceleration

Question 4

In which formula delta is used correctly?

Accepted Answer

$\frac{m}{p}=v$

Answer

$\frac{m}{p}=v$

Answer

$\frac{m}{p}=v$

Answer

$\frac{m}{p}=v$

Question 5

How do we call the method for calculating speed in a graph?

Accepted Answer

triangle method

Answer

velocity method

Answer

3 stage method

Answer

square method

Question 6

Which of the following statements about acceleration is always true?

Accepted Answer

If an object has a constant velocity, its acceleration is zero

Answer

Acceleration is always in the direction of motion.

Answer

An object moving with a constant speed always has zero acceleration.

Answer

If an object’s speed increases, it must be accelerating.

Question 7

What happen with a tennis ball after being hitted by a tennis racket?

Accepted Answer

A part of the momentum of the racket is transfer to the ball

Answer

The direction of the ball changes

Answer

The tennis ball absorbs the force of the tennis racket

Answer

The speed of the ball changes

Question 8

What of the following utensils it is used to measure short intervals of time?

Accepted Answer

Pendulum

Answer

Pendulum clock

Answer

Micrometer

Answer

Pulsometer

Question 9

What of the following formula it is correct for converting cm³ to m³ ?

Accepted Answer

Volume in m³= $\frac{volume\ in\ cm\ ^3}{1000000}$

Answer

Volume in cm³= $\frac{volume\ in\ cm\ ^3}{1000000}$

Answer

Volume in m³ = $\frac{volume\ in\ cm\ ^3}{1000000}$

Answer

Volume in m³= $\frac{volume\ in\ cm\ ^3}{1000000}$

Question 10

One cubic decimetre is equal to...

Accepted Answer

0.001 m3

Answer

0.001 cm3

Answer

0.01 cm3

Answer

0.01 m3

Question 11

Which equation is correct for calculating the distance travelled in a graph?

Accepted Answer

$\frac{m}{p}=v$

Answer

d = $\frac{m}{s^2}$

Answer

$\frac{m}{p}=v$

Answer

d = $\frac{m}{s^2}$

Question 12

Which of the following is not a unit of acceleration?

Accepted Answer

km/s

Answer

m/s2

Answer

km/s2

Answer

mph/s

Question 13

What it si a common mistake when you calculate the distance?

Accepted Answer

Do not use the average speed in the equation

Answer

Rounding the decimals

Answer

Use the average speed in the equation

Answer

Do not calculate the time intervals

Question 14

Select the correct name for the force that makes you float on water

Accepted Answer

Upthrust

Answer

Floatation force

Answer

Weight resistance

Answer

Submergence force

Question 15

When you throw a ball and you take a picture of it (each one with the same interval of time ) and in each one the ball falls further and further this shows that...

Accepted Answer

It is accelerating

Answer

The speed is decreasing

Answer

It is in a constant speed

Answer

The ball's weight push it down

Question 16

what happen with the area of a parachute when you open it?

Accepted Answer

Greatly increase its area and hence air resistance

Answer

It hence air resistance

Answer

It stay the same

Answer

The area expands when it touches the floor

Question 17

When an object is moving in a circle it's velocity is...

Accepted Answer

Changing

Answer

At a constant speed

Answer

Increasing

Answer

Staying the same

Question 18

What is the vector quantity for distance?

Accepted Answer

velocity

Answer

velocity vector

Answer

scalar distance

Answer

displacement

Question 19

What it is Usain's Bolt average speed when he achieved his 100m world record in 2009?

Accepted Answer

0.09

Answer

0.009

Answer

0.90

Answer

0.98

Question 20

If a large truck and a small car collide head-on. Which object experiences a greater change in momentum during the collision?

Accepted Answer

Both experiences the same

Answer

The small car

Answer

The large truck

Answer

The one that collide first

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