Physics Chapter on Force and Motion

Questions and Answers

What is the formula for Speed?

a = change in velocity/time

P = work/time

p = mass x velocity

v = d/t (correct)

What is the unit of Speed?

m/s

What is the formula for Acceleration?

p = mass x velocity

a = change in velocity/time (correct)

N = mass x acceleration

W = force x distance

What is the unit of Acceleration?

m/s² Signup and view all the answers

What is the formula for Momentum?

p = mass x velocity Signup and view all the answers

What is the unit of Momentum?

kg m/s Signup and view all the answers

What is the formula for Force?

N = mass x acceleration Signup and view all the answers

What is the unit of Force?

N Signup and view all the answers

What is the formula for Weight?

N = mass x gravitational acceleration Signup and view all the answers

What is the unit of Weight?

N Signup and view all the answers

What is the formula for Work?

W = f x d Signup and view all the answers

What is the unit of Work?

J Signup and view all the answers

What is the formula for Power?

P = W/t Signup and view all the answers

What is the unit of Power?

W Signup and view all the answers

What is the formula for Mechanical Advantage for Force?

MA = output force/input force Signup and view all the answers

What is the formula for Mechanical Advantage for Distance?

MA = input distance/output distance Signup and view all the answers

What is the formula for Efficiency?

Efficiency = useful work output/work input x 100 Signup and view all the answers

What is the formula for Gravitational Potential Energy?

PE = mgh Signup and view all the answers

What is the unit of Gravitational Potential Energy?

J Signup and view all the answers

What is the formula for Kinetic Energy?

KE = ½mѴ² Signup and view all the answers

What is the unit of Kinetic Energy?

J Signup and view all the answers

Study Notes

Speed

Speed formula: v = d/t, where v represents speed, d represents distance, and t is time.
Speed unit: measured in meters per second (m/s).

Acceleration

Acceleration formula: a = ∆v/t, where a is acceleration, ∆v is the change in velocity, and t is time.
Acceleration unit: expressed in meters per second squared (m/s²).

Momentum

Momentum formula: p = m x v, where p is momentum, m is mass, and v is velocity.
Momentum unit: measured in kilogram meters per second (kg m/s).

Force

Force formula: N = m x a, where N is force (in Newtons), m is mass, and a is acceleration.
Force unit: Newton (N), equivalent to kg m/s².

Weight

Weight formula: w = m x g, where w is weight, m is mass, and g is gravitational acceleration.
Weight unit: expressed in Newtons (N), which is also kg m/s².

Work

Work formula: W = F x d, where W is work, F is force, and d is distance.
Work unit: Joule (J), defined as kg m²/s².

Power

Power formula: P = W/t, where P is power, W is work, and t is time.
Power unit: Watt (W), which is kg m²/s³.

Mechanical Advantage

Mechanical advantage for force: MA = Output Force/Input Force.
Mechanical advantage for distance: MA = Input Distance/Output Distance.

Efficiency

Efficiency formula: Useful work output / Work input x 100, representing the effectiveness of a machine or process.

Gravitational Potential Energy

Gravitational Potential Energy formula: PE = mgh, where PE is gravitational potential energy, m is mass, g is free-fall acceleration, and h is height.
Gravitational Potential Energy unit: Joule (J), equivalent to kg m²/s².

Kinetic Energy

Kinetic Energy formula: KE = ½ m v², where KE is kinetic energy, m is mass, and v is speed.
Kinetic Energy unit: Joule (J), which is also kg m²/s².

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Description

This quiz covers fundamental concepts in physics related to force, motion, and their calculations. You will explore the formulas for speed, acceleration, momentum, force, weight, work, and power. Test your understanding of these essential principles with this comprehensive quiz.