science revision v2 Force

Question 1

What is a force?

Answer 1

A force is a push or pull acting on an object.

Question 2

True or False: Forces can change the shape of an object.

Answer 2

True

Question 3

What unit is used to measure force?

Answer 3

Newton

Question 4

Fill in the blank: The force of gravity pulls objects towards the ______.

Answer 4

Earth

Question 5

What is the formula for calculating force?

Answer 5

Force = Mass x Acceleration

Question 6

Multiple Choice: Which of the following is NOT a type of force? A) Friction B) Gravity C) Speed

Answer 6

C) Speed

Question 7

What is friction?

Answer 7

Friction is a force that opposes the motion of an object.

Question 8

True or False: An object at rest will remain at rest unless acted upon by a net force.

Answer 8

True

Question 9

What is the effect of balanced forces on an object?

Answer 9

Balanced forces do not change the object’s motion.

Question 10

What is the difference between contact and non-contact forces?

Answer 10

Contact forces require physical contact, while non-contact forces act at a distance.

Question 11

Multiple Choice: Which of the following is an example of a non-contact force? A) Tension B) Magnetism C) Friction

Answer 11

B) Magnetism

Question 12

What is mass?

Answer 12

Mass is the amount of matter in an object.

Question 13

True or False: The weight of an object can change depending on its location.

Answer 13

True

Question 14

What is air resistance?

Answer 14

Air resistance is a type of friction that acts against the motion of an object moving through air.

Question 15

Fill in the blank: The total force acting on an object is called the ______ force.

Answer 15

net

Question 16

What does Newton’s first law state?

Answer 16

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net force.

Question 17

Multiple Choice: What is the effect of unbalanced forces? A) No change in motion B) Change in motion C) Constant speed

Answer 17

B) Change in motion

Question 18

What is gravitational force?

Answer 18

Gravitational force is the force of attraction between two masses.

Question 19

True or False: Mass and weight are the same thing.

Answer 19

False

Question 20

Fill in the blank: The stronger the force, the greater the ______ of the object.

Answer 20

acceleration

Question 21

What is tension?

Answer 21

Tension is the pulling force transmitted through a string, rope, or cable.

Question 22

Multiple Choice: Which force opposes the motion of a sliding object? A) Gravity B) Friction C) Tension

Answer 22

B) Friction

Question 23

What is the role of a force in changing an object’s speed?

Answer 23

A force can increase or decrease an object’s speed.

Question 24

True or False: All forces are visible.

Answer 24

False

Question 25

what is the formular for calculating speed

Answer 25

speed= distance / Time e.g. s = 10m/2s = 5m/s

Question 26

what is the formular for calculating distance an object has traveled

Answer 26

distance = speed / Time

Question 27

what is the formular for calculating Time it takes for an object to get somewhere

Answer 27

Time = Speed / Distance

Question 28

How do you calculate the weight of an object

Answer 28

Weight = Mass (kg) x gravitational field (N/kg)

Question 29

What is the devise used to measure a force

Answer 29

a Newtonmeter