Motion

The change in the position of an object over time.
1. Acceleration
2. Motion
3. Velocity
4. Distance
To describe the position of an object we need to specify a reference point called the ____________.
1. Accelertaion
2. Motion
3. Origin
4. Distance
The simplest type of motion is the motion along a ____________line.
1. straight
2. curved
3. zig zag
4. all of these
This type of motion is defined as the motion of an object in which the object travels in a straight line and its velocity remains constant along that line as it covers equal distances in equal intervals of time, irrespective of the duration of the time
1. uniform motion
2. non-uniform motion
3. Both a and b
4. None
when an object travels unequal distances in equal periods of time. i.e. the object travels at different rates at different times (acceleration).
1. uniform motion
2. non-uniform motion
3. Both a and b
4. None
__________objects may take different amounts of time to cover a given distance.
1. Same
2. Parallel
3. Different
4. None
The rate at which someone or something moves or operates or is able to move or operate.
1. Distance
2. Acceleration
3. Time
4. Speed
The SI unit of speed is
1. Centimetre per second.
2. metre per hour.
3. Centi metre per hour.
4. metre per second.
The SI unit of speed is represented by the symbol
1. ms–1
2. m/s
3. both a and b
4. None
centimetre per second is represented by the symbol
1. m s–1
2. m/s
3. cm s–1
4. km h–1
kilometre per hour is represented by the symbol
1. m s–1
2. m/s
3. cm s–1
4. km h–1
To specify the speed of an bject, we require only its ______
1. direction
2. magnitude
3. both a and b
4. None
The ________of an object need not be constant.
1. speed
2. Distance
3. Displacement
4. Acceleration
The ____________of an object is obtained by dividing the total distance travelled by the total time taken
If an object travels a distance s in time t then its speed v is,
1. v = s / t
2. s = v / t
3. t = s / v
4. none
The ____________is given by the arithmetic mean of initial velocity and final velocity for a givenb period of time
Speed and velocity have the ____units,
1. no
2. different
3. same
4. depends on the situation
An object travels 16 m in 4 s and then another 16 m in 2 s. What is the average speed of the object?
1. 5.33 m s–1
2. 3.55 m s–1
3. 5.35 m s–1
4. 3.53 m s–1
The odometer of a car reads 2000 km at the start of a trip and 2400 km at the end of the trip. If the trip took 8 h, calculate the average speed of the car in km h–1 and m s–1.
1. 50 km h–1
2. 13.9 m s–1
3. Both a and b
4. None
Usha swims in a 90 m longpool. She covers 180 m in one minute by swimming from one end to the other and back along the same straight path. Find the average speed and average velocity of Usha.
1. 3 m s-1, 0 m s-1
2. 0 m s-1, 3 m s-1
3. both a and b
4. none
Measure of the change in the velocity of an object per unit time.
Starting from a stationary position, Rahul paddles his bicycle to
attain a velocity of 6 m s–1 in 30 s. Then he applies brakes such that the velocity of the bicycle comes down to 4 m s-1 in the next 5 s. Calculate the acceleration of the bicycle in both the cases.
1. 0.2 m s–2
2. –0.4 m s–2
3. both a and b
4. none
_________provide a convenient method to present basic information about a variety of
events
A train starting from rest attains a velocity of 72 km h–1 in 5 minutes. Assuming that the acceleration is uniform, find (i) the acceleration and (ii) the distance travelled by the train for attaining this velocity.
1. 1 / 15
  m s-2
2. 3 km
3. Both a and b
4. none
A car accelerates uniformly from 18 km h–1 to 36 km h–1 in 5 s. Calculate (i) the acceleration and (ii) the distance covered by the car in that time.
1. 1 m s–2
2. 37.5 m
3. Both a and b
4. none
The brakes applied to a car produce an acceleration of 6 m s-2 in the opposite direction to the motion. If the car takes 2 s to stop after the application of brakes, calculate the distance it travels during this time.
1. 6 m
2. 12 m
3. 3 m
4. 21 m
_____________can be described as the motion of an object in a circle at a constant speed. As an object moves in a circle, it is constantly changing its direction. At all instances, the object is moving tangent to the circle.
The _____of an object could be uniform or non-uniform depending on whether its velocity is constant or changing
The ____of an object is the distance covered per unit time, and velocity is the displacement per unit time
The __________of an object is the change in velocity per unit time.
Uniform and non-uniform motions of objects can be shown through ______
1. daigrams
2. graphs
3. tables
4. data
The motion of an object moving at uniform acceleration can be described with the help of the following equations, namely
1. v = u + at
2. s = ut + 1/2 at^2
3. 2as = v^2 - u^2
4. All of these

Motion

Quiz