Motion 1 - SS1 Physics Past Questions and Answers - page 2
Which of the following is a vector quantity?
Distance
Speed
Displacement
Time
If an object is moving with a constant velocity, its acceleration is:
Zero
Positive
Negative
Not enough information provided.
A car travels a distance of 200 meters in 20 seconds. What is the average velocity of the car?
Average velocity = Total displacement / Total time
Total displacement = 200 meters (given)
Total time = 20 seconds (given)
Average velocity = 200 meters / 20 seconds
Average velocity = 10 meters per second
An object is moving with a constant velocity of 5 m/s. If it travels a distance of 100 meters, what is the time taken?
Velocity (v) = 5 m/s (given)
Distance (s) = 100 meters (given)
Using the equation: v = s / t
5 m/s = 100 meters / t
t = 100 meters / 5 m/s
t = 20 seconds
A car accelerates from rest to a velocity of 30 m/s in 10 seconds. What is the acceleration of the car?
Initial velocity (u) = 0 m/s (car starts from rest)
Final velocity (v) = 30 m/s (given)
Time (t) = 10 seconds (given)
Using the equation: a = (v - u) / t
Acceleration (a) = (30 m/s - 0 m/s) / 10 seconds
Acceleration (a) = 3 m/s2
An object moves with an initial velocity of 10 m/s and comes to rest in 5 seconds. What is the acceleration of the object?
Initial velocity (u) = 10 m/s (given)
Final velocity (v) = 0 m/s (object comes to rest)
Time (t) = 5 seconds (given)
Using the equation: a = (v - u) / t
Acceleration (a) = (0 m/s - 10 m/s) / 5 seconds
Acceleration (a) = -2 m/s2
On a distance-time graph, a straight line with a positive slope represents:
An object at rest.
An object moving with constant speed
An object accelerating.
An object changing direction.
On a speed-time graph, a horizontal line represents:
An object at rest
An object moving with constant speed.
An object accelerating
An object changing direction.
On a distance-time graph, the slope of the line represents:
Acceleration
Speed
Displacement
Time.
On a speed-time graph, the area under the curve represents:
Displacement
Acceleration
Time
Distance.