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Worksheets6.3 Relative Velocity
Total questions: 13
Worksheet time: 10mins
direction
Observers using different ___________________ may measure different velocities for an object in motion
frame of reference
relatives of motion
projectile motions
constant velocity
If a car passes you in the left lane going 90 km/hr north while you are driving 80 km/hr north, how fast is the car moving relative to your car?
170 km/hr
90 km/hr
80 km/hr
10 km/hr
You are riding in a car with a friend in the passenger seat. Relative to the friend, what is your velocity?
Your velocity is positive
Your velocity is negative
Your velocity is zero
A boat is moving in a river with a velocity of 15 km/h. The river is flowing in the same direction with a velocity of 10 km/h. What is the boat's velocity with respect to the ground?
35 km/h
25 km/h
20 km/h
5 km/h
A train is moving at a speed of 100 km/h. If a person inside the train is running towards the back of the train at a speed of 10 km/h, what is the person's velocity with respect to the ground?
110 km/h
80 km/h
10 km/h
90 km/h
A car is moving at a speed of 80 km/h. If a bird is flying in the opposite direction with a speed of 20 km/h, what is the bird's velocity with respect to the ground?
100 km/h
20 km/h
60 km/h
40 km/h
When both an object and the reference frame it moves in move in the same direction, how do you find the velocity of the object relative to the ground?
Add the squares of the velocities.
Average the velocities.
Add the velocities.
Subtract the velocities.
A boat is moving north at 10.0 m/s relative to the shore. If you walk toward the back of the boat at 3.0 m/s relative to the boat, what is your velocity relative to the shore?
13 m/s south
13 m/s north
7 m/s south
7 m/s north
How do you find the resultant velocity vector when solving a problem involving motion in two dimensions?
Place the velocity vectors tip-to-tail.
Place the position vectors tip-to-tail.
Add the magnitudes and use the direction of the longer vector.
Subtract the magnitudes and use the direction of the longer vector.
When both an object and the reference frame it moves in move in opposite directions, how do you find the velocity of the object relative to the ground?
Add the squares of the velocities.
Subtract the velocities.
Average the velocities.
Add the velocities.
Both cars are traveling at 55 mph in the same direction. How would the relative motion of car A appear to a person traveling in car B?
moving faster
not moving
moving slower
going backward
