Podcast
Questions and Answers
If a rock is thrown horizontally from the top of a cliff, what is the direction of the acceleration?
If a rock is thrown horizontally from the top of a cliff, what is the direction of the acceleration?
- horizontally
- upwards
- zero
- downwards (correct)
What is the primary force responsible for a projectile's vertical motion?
What is the primary force responsible for a projectile's vertical motion?
- gravity (correct)
- horizontal velocity
- air resistance
- buoyancy
A hot air balloon enthusiast throws a grapefruit with a horizontal initial velocity. What is the acceleration of the grapefruit?
A hot air balloon enthusiast throws a grapefruit with a horizontal initial velocity. What is the acceleration of the grapefruit?
- downwards due to gravity (correct)
- æ°´å¹³direction
- zero
- upwards due to buoyancy
A motorbike traveling with an initial velocity is brought to rest by applying a brake. What is the nature of this process?
A motorbike traveling with an initial velocity is brought to rest by applying a brake. What is the nature of this process?
What is the effect of a net upward force on an object's velocity?
What is the effect of a net upward force on an object's velocity?
What can be calculated by multiplying an object's mass by its velocity?
What can be calculated by multiplying an object's mass by its velocity?
A ball is launched with an initial velocity at an angle above the horizontal. What is the direction of the acceleration?
A ball is launched with an initial velocity at an angle above the horizontal. What is the direction of the acceleration?
What is the horizontal component of a ball's velocity if it is launched at an angle?
What is the horizontal component of a ball's velocity if it is launched at an angle?
A car travels west with a momentum of -30,000 kg.m/s. What is the direction of its velocity?
A car travels west with a momentum of -30,000 kg.m/s. What is the direction of its velocity?
What is the primary force responsible for an object's vertical displacement?
What is the primary force responsible for an object's vertical displacement?
