What is the velocity of an object that travels 20 meters in 5 seconds in a straight line?
A2 m/s
B4 m/s
C10 m/s
D25 m/s
Velocity is calculated as displacement divided by time. Here, displacement is 20 meters and time is 5 seconds. So, velocity = 20/5 = 4 m/s.
PhysicsKinematicsEasy#2
If an object moves with a constant velocity, what can be said about its acceleration?
AIt is increasing
BIt is decreasing
CIt is zero
DIt is constant but not zero
Acceleration is the rate of change of velocity. If velocity is constant, there is no change in velocity, so acceleration is zero.
PhysicsKinematicsEasy#3
What is the displacement of an object if it moves with a velocity of 10 m/s for 3 seconds?
A13 m
B30 m
C33 m
D3 m
Displacement is given by velocity multiplied by time. Here, velocity is 10 m/s and time is 3 s. So, displacement = 10 * 3 = 30 m.
PhysicsKinematicsEasy#4
Which of the following is a vector quantity?
ASpeed
BDistance
CVelocity
DTime
Velocity is a vector quantity because it has both magnitude and direction. Speed, distance, and time are scalar quantities as they have only magnitude.
PhysicsKinematicsEasy#5
What does a straight line on a distance-time graph indicate?
AConstant acceleration
BConstant velocity
CZero velocity
DIncreasing acceleration
A straight line on a distance-time graph indicates that the distance changes at a constant rate, which means the object is moving with constant velocity.
PhysicsKinematicsEasy#6
If an object is at rest, what is its velocity?
A0 m/s
B1 m/s
C10 m/s
DUndefined
If an object is at rest, it is not moving, so its velocity is 0 m/s.
PhysicsKinematicsEasy#7
What is the average speed of a car that travels 100 km in 2 hours?
A50 km/h
B200 km/h
C100 km/h
D25 km/h
Average speed is total distance divided by total time. Here, distance is 100 km and time is 2 hours. So, average speed = 100/2 = 50 km/h.
PhysicsKinematicsEasy#8
Which of the following represents uniform motion?
AA car slowing down
BA ball rolling downhill
CA bicycle moving at constant speed
DA rocket accelerating
Uniform motion occurs when an object moves with constant speed in a straight line. A bicycle moving at constant speed represents uniform motion.
PhysicsKinematicsEasy#9
What is the unit of acceleration?
Am/s
Bm
Cm/s²
Ds
Acceleration is the rate of change of velocity, and its unit is meters per second squared (m/s²).
PhysicsKinematicsEasy#10
If an object covers equal distances in equal intervals of time, what type of motion is it undergoing?
AAccelerated motion
BUniform motion
CNon-uniform motion
DCircular motion
If an object covers equal distances in equal intervals of time, it is moving with constant speed, which is characteristic of uniform motion.