Grade 12 Physics: Linear Velocity
A worksheet for Grade 12 Physics students focusing on understanding and calculating linear velocity, its relationship with angular velocity, and problem-solving.
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Grade 12 Physics: Linear Velocity
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Read each question carefully and provide your answers in the space provided. Show all your work for calculations.
1. Which of the following is the correct definition of linear velocity?
The total distance traveled per unit time.
The rate of change of displacement with respect to time.
The rate of change of speed with respect to time.
The total path length covered.
2. An object moves in a circular path with a constant angular velocity. How does its linear velocity change?
Its magnitude remains constant, but its direction changes.
Its magnitude changes, but its direction remains constant.
Both its magnitude and direction remain constant.
Both its magnitude and direction change.
1. Linear velocity is a quantity, meaning it has both magnitude and direction.
2. The instantaneous linear velocity of an object in circular motion is always to the circular path.
3. The SI unit for linear velocity is .
1. A car travels 150 km in 2 hours. Calculate its average linear velocity in km/h.
2. A point on the edge of a rotating disk with a radius of 0.5 meters has an angular velocity of 4 rad/s. Calculate the linear velocity of this point.
1. Linear velocity and speed are always the same.
True
False
2. An object can have a constant speed but a changing linear velocity.
True
False
1. A satellite orbits Earth at a constant speed of 7.6 km/s. If the radius of its orbit is 6800 km, calculate the time it takes for the satellite to complete one full orbit (its period) in minutes.