Motion_LS_3

What type of motion, uniform or non-uniform, is exhibited by a freely falling body? What is the first statement of this audio clip?

• A freely falling body exhibits a non-uniform motion.

• Because it covers unequal distances in equal intervals of time.

What type of motion, uniform or non-uniform, is exhibited by a freely falling body? What is the second statement of this audio clip?

• A freely falling body exhibits a non-uniform motion.

• Because it covers unequal distances in equal intervals of time.

State whether speed is a scalar or a vector quantity. Give reason for your choice.

Bus X travels a distance of 360 km in 5 hours whereas bus Y travels a distance of 476 km in 7 hours. Whichbus travels faster ?

• Bus X is faster than Bus Y

  because Speed=X 360​/5=72 km/h

• Bus Y is slower than Bus X

  because Speed=Y=476​/7 =68 km/h

• Bus Y is faster than Bus X

  because Speed=X 360​/5=72 km/h

• Bus X is slower than Bus Y

  because Speed=Y=476​/7 =68 km/h

Write the formula for acceleration. Give the meaning of each symbol which occurs in it.

• V-U/T

• V+U/T

• U-V/T

• U+V/T

What term is used to denote the change of velocity with time?

Give one word which means the same as ‘moving with a negative acceleration”.

• Motion

• Retardation

The displacement of a moving object in a given interval of time is zero. Would the distance travelled by the object also be zero? Give reason for your Answer. What is the first statement of this audio clip?

• the distance travelled by the object will not be zero asdistance is a scalar quantity having magnitude only

• And no specified direction

The displacement of a moving object in a given interval of time is zero. Would the distance travelled by the object also be zero? Give reason for your Answer. What is the second statement of this audio clip?

• the distance travelled by the object will not be zero asdistance is a scalar quantity having magnitude only

• And no specified direction

A snail covers a distance of 100 metres in 50 hours. Calculate the average speed of snail in km/h.

• 2 m/hr

• 0.002 km/hr

• 0.1km

• 2 km/hr