Autumn Test

When can a body have zero velocity?

• When it is in linear motion.

• When the displacement is zero.

• When it has a negative acceleration.

• When the displacement is constant.

How much time did Pema take to cover 105 km if she drove at a speed of 35 km/hr?

• 3 hours

• 2 hours

• 1 hour

• 4 hours

Object near the poles experiences increased acceleration due to gravity.

• True

• False

What is the formula to calculate the distance traveled when speed and time are known?

• Distance = Speed × Time

• Distance = Speed + Time

• Distance = Speed - Time

• Distance = Speed / Time

Bluff bodies experience less friction.

• False

• True

Velocity and displacement are _________ quantities.

The increasing order of fluid friction of the given fluids will be:

(honey, water, and blood)

• Water<blood<honey

• honey<water<blood

• blood<water<honey

• honey<blood<water

How would the pressure change if the area is doubled but the force is kept constant?

• The pressure becomes half.

• The pressure remains the same.

• The pressure becomes double.

• The pressure becomes zero.

Which of the following factors does NOT affect fluid friction?

• Viscosity of the fluid

• Speed of the object with respect to the fluid

• Shape of the object

• Color of the object

An object lifted 10m gains 200 J of potential energy. If the same object is lifted 20m, its potential energy gain is...

• 
  

  Twice as much

• Half as much

• The same

• Four times as much