A truck and a car are moving with equal velocity. If equal retarding force is applied on each, then on applying the brakes both will stop after certain distance 

1. Truck will cover less distance before rest

2. Car will cover less distance before rest

3. Both will cover equal distance

4. None

A body of 5 kg is moving with a velocity of 20 m/s. If a force of 100 N is applied on it for 10 sec in the same direction as its velocity, what will now be the velocity of the body?

1. 200 m/s

2. 220 m/s

3. 240 m/s

4. 260 m/s

A cyclist turns around a curve at 15 miles/hour. If he turns at double the speed, the tendency to overturn is  

1. Doubled

2. Quadrupled

3. Halved

4. Unchanged

A car sometimes overturns while taking a turn. When it overturns, it is:

1. the inner wheel which leaves the ground first.

2. the outer wheel which leaves the ground first.

3. both the wheels leave the ground simultaneously.

4. either wheel leaves the ground first.

A motor cyclist moving with a velocity of 72 km/hour on a flat road takes a turn on the road at a point where the radius of curvature of the road is 20 meters. The acceleration due to gravity is 10 m/sec². In order to avoid skidding, he must not bend with respect to the vertical plane by an angle greater than 

1. $\theta ={\tan }^{-1}6$

2. $\theta ={\tan }^{-1}2$

3. $\theta ={\tan }^{-1}25.92$

4. $\theta ={\tan }^{-1}4$

A particle moves in a circular orbit under the action of a central attractive force inversely proportional to the distance ‘r’. The speed of the particle is 

1. Proportional to r²

2. Independent of r

3. Proportional to r

4. Proportional to 1/r

A 500 kg car takes a round turn of radius 50 m with a velocity of 36 km/hr. The centripetal force is 

1. 250 N

2. 750 N

3. 1000 N

4. 1200 N

A ball of mass 0.25 kg attached to the end of a string of length 1.96 m is moving in a horizontal circle. The string will break if the tension is more than 25 N. What is the maximum speed with which the ball can be moved 

1. 14 m/s

2. 3 m/s

3. 3.92 m/s

4. 5 m/s

A body of mass 5 kg is moving in a circle of radius 1m with an angular velocity of 2 radian/sec. The centripetal force is 

1. 10 N

2. 20 N

3. 30 N

4. 40 N

Find the maximum velocity for skidding for a car moved on a circular track of radius 100 m. The coefficient of friction between the road and tyre is 0.2 

1. 0.14 m/s

2. 140 m/s

3. 1.4 km/s

4. 14 m/s