Question 1

A tow truck exerts a force of 2000 N on a car, causing it to accelerate at $2.5 \mathrm {~m} / \mathrm { s } ^ { 2 }$ What is the mass of the car?
A)80 kg
B)800 kg
C)2000 kg
D)5000 kg

Accepted Answer

The mass of the car can be calculated using Newton's second law, $ F = ma $. Rearranging gives $ m = \frac{F}{a} = \frac{2000 \, \text{N}}{2.5 \, \text{m/s}^2} = 800 \, \text{kg} $.

Question 2

A "suction cup" sticks to the wall because it is
A)pulled to the wall by vacuum
B)pushed to the wall by the atmosphere
C)both of these
D)none of the above

Accepted Answer

A suction cup sticks to the wall because the air pressure outside the cup is greater than the pressure inside, pushing the cup against the wall.

Question 3

A car is driving down the road going 90 kmph when it collides head-on with a mosquito that is flying 5 kmph in the opposite direction.Which of the following statements is true as a result
Of the collision:
A)The car experiences the greater impact force.
B)The mosquito experiences the greater impact force.
C)The car experiences the greater acceleration.
D)The mosquito experiences the greater acceleration.

Accepted Answer

According to Newton's third law, both the car and the mosquito experience the same magnitude of force during the collision. However, due to the mosquito's much smaller mass, it experiences a much greater acceleration.

Question 4

Calculate the torque produced by a 50N perpendicular force at the end of a $20 \mathrm {~cm}$ -long wrench. a. $10 N ^ { \cdot } \mathrm { m }$
b. $1000 \mathrm {~N} ^ { \cdot} \mathrm { m }$
c. $2.5 \mathrm {~N} / \mathrm { cm }$
d. $0.4 \mathrm {~cm} / \mathrm { N }$

Accepted Answer

The answer of Calculate the torque produced by a 50N...

Question 5

Identify the force that accelerates a car:
A)the car pushing on the road
B)the road pushing on the car
C)the engine pushing on the wheels
D)the wheels pushing on the engine

Accepted Answer

The answer of Identify the force that accelerates a car:
A)the...

Question 6

Identify the force that propels a rocket through the vacuum of outer space: the rocket pushing on air.
A)the rocket pushing on air
B)air pushing on the rocket
C)the rocket pushing on a distant planet
D)expanding gases pushing on the rocket

Accepted Answer

The force that propels a rocket through the vacuum of outer space is expanding gases pushing on the rocket. In space, there is no air for the rocket to push against, so it relies on the combustion of fuel to produce expanding gases that generate thrust and push the rocket forward.

Question 7

If a small sports car collides head-on with a massive truck, which vehicle experiences the
greater impact force? Which vehicle experiences the greater acceleration due to the impact?

Accepted Answer

The answer of If a small sports car collides head-on...

Question 8

What is the SI unit for pressure? a. $\mathrm { Pa }$
b. $\mathrm { MPa }$
c. $\mathrm { mmH } _ { 2 } \mathrm { O }$
d. $\mathrm { mmHg }$

Accepted Answer

The answer of What is the SI unit for pressure?...

Question 9

A "teeter-totter" (or "see-saw" if you prefer) has a 200 N child sitting at one end, 3 m from the center pivot point (fulcrum).How far from the center point should a 500 N adult sit in order
To balance the teeter-totter? a. $1 \mathrm {~m}$
b. $1.2 \mathrm {~m}$
c. $3 \mathrm {~m}$
d. $5 \mathrm {~m}$

Accepted Answer

The answer of A "teeter-totter" (or "see-saw" if you prefer)...

Question 10

A force acting on an object tends to produce
A)mass
B)speed
C)acceleration
D)rotation

Accepted Answer

According to Newton's second law of motion, force applied to an object produces acceleration. The greater the force, the greater the acceleration. Therefore, the correct choice is C.

Question 11

A tow truck exerts a force of 2000 N on a car, causing it to accelerate at $4 \mathrm {~m} / \mathrm { s } ^ { 2 }$ .What is the mass of the car?
A)500kg
B)750kg
C)1000kg
D)1500kg
E)None of the above

Accepted Answer

The mass of the car can be calculated using Newton's second law, $ F = ma $. Rearranging for mass, $ m = \frac{F}{a} = \frac{2000 \, \text{N}}{4 \, \text{m/s}^2} = 500 \, \text{kg} $.

Question 12

Pressure is a fundamental dimension.

Accepted Answer

The answer of Pressure is a fundamental dimension....

Quiz 10: Force and Force-Related Parameters

A tow truck exerts a force of 2000 N on a car, causing it to accelerate at 2.5 m/s22.5 \mathrm {~m} / \mathrm { s } ^ { 2 }2.5 m/s2 What is the mass of the car?

A "suction cup" sticks to the wall because it is

A car is driving down the road going 90 kmph when it collides head-on with a mosquito that is flying 5 kmph in the opposite direction.Which of the following statements is true as a result Of the collision:

Identify the force that accelerates a car:

Identify the force that propels a rocket through the vacuum of outer space: the rocket pushing on air.

If a small sports car collides head-on with a massive truck, which vehicle experiences the greater impact force? Which vehicle experiences the greater acceleration due to the impact?

What is the SI unit for pressure? a. Pa\mathrm { Pa }Pa b. MPa\mathrm { MPa }MPa c. mmH2O\mathrm { mmH } _ { 2 } \mathrm { O }mmH2​O d. mmHg\mathrm { mmHg }mmHg

A force acting on an object tends to produce

A tow truck exerts a force of 2000 N on a car, causing it to accelerate at 4 m/s24 \mathrm {~m} / \mathrm { s } ^ { 2 }4 m/s2 .What is the mass of the car?

Pressure is a fundamental dimension.

A tow truck exerts a force of 2000 N on a car, causing it to accelerate at $2.5 \mathrm {~m} / \mathrm { s } ^ { 2 }$ What is the mass of the car?

What is the SI unit for pressure? a. $\mathrm { Pa }$ b. $\mathrm { MPa }$ c. $\mathrm { mmH } _ { 2 } \mathrm { O }$ d. $\mathrm { mmHg }$

A tow truck exerts a force of 2000 N on a car, causing it to accelerate at $4 \mathrm {~m} / \mathrm { s } ^ { 2 }$ .What is the mass of the car?