Podcast
Questions and Answers
What is the formula for Speed?
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?
What is the unit of Speed?
m/s
What is the formula for Acceleration?
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?
What is the unit of Acceleration?
What is the formula for Momentum?
What is the formula for Momentum?
What is the unit of Momentum?
What is the unit of Momentum?
What is the formula for Force?
What is the formula for Force?
What is the unit of Force?
What is the unit of Force?
What is the formula for Weight?
What is the formula for Weight?
What is the unit of Weight?
What is the unit of Weight?
What is the formula for Work?
What is the formula for Work?
What is the unit of Work?
What is the unit of Work?
What is the formula for Power?
What is the formula for Power?
What is the unit of Power?
What is the unit of Power?
What is the formula for Mechanical Advantage for Force?
What is the formula for Mechanical Advantage for Force?
What is the formula for Mechanical Advantage for Distance?
What is the formula for Mechanical Advantage for Distance?
What is the formula for Efficiency?
What is the formula for Efficiency?
What is the formula for Gravitational Potential Energy?
What is the formula for Gravitational Potential Energy?
What is the unit of Gravitational Potential Energy?
What is the unit of Gravitational Potential Energy?
What is the formula for Kinetic Energy?
What is the formula for Kinetic Energy?
What is the unit of Kinetic Energy?
What is the unit of Kinetic Energy?
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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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