Question 1 :
A body of mass 5 kg is moving in a circle of radius 1 m with an angular velocity of 2 <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5e9801394e70da2c08cb3d9d"> . The centripetal force, is
Question 2 :
A body of mass <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5e97fed8cf5ae23387f28f3e"> moves in a circular path with uniform angular velocity. The motion of the body has constant
Question 3 :
An aeroplane flying horizontally with a speed of <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5e9801334e70da2c08cb3d53"> releases a bomb at a height of 490 m from the ground. When will the bomb strike the ground?
Question 4 :
In uniform circular motion, the velocity vector and acceleration vector are
Question 5 :
A particle is moving in a circle of radius <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5e97fedb4e70da2c08cb2db1"> with constant speed <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5e97fefccf5ae23387f28fac"> , if radius is double then its centripetal force to keep the same speed should be
Question 6 :
The time period of the second’s hand of a watch is
Question 7 :
In an atom for the electron to revolve around the nucleus, the necessary centripetal force is obtained from the following force exerted by the nucleus on the electron
Question 8 :
The force required to keep a body in uniform circular motion is
Question 9 :
A body executing uniform circular motion has at any instant its velocity vector and acceleration vector
Question 10 :
A mass of 100 g is tied to one end of string 2 m long. The body is revolving in a horizontal circle making a maximum of 200 revolutions/min. The other end of the string is fixed at the centre of the circle of revolution. The maximum tension that the string can bear is approximately
Question 11 :
A boat, which has a speed of {tex} 5 \mathrm { km } / \mathrm { h } {/tex} in still water, crosses a river of width {tex} 0.5 \mathrm { km } {/tex} along the shortest possible path. If the speed of the river is {tex} 4 \mathrm { km } / \mathrm { h } {/tex} then the time taken in minutes is
Question 12 :
The length of the second's hand in a watch is {tex} 1 \mathrm { cm } . {/tex} The magnitude of the change in the velocity of its tip in {tex} 15 \mathrm { s } {/tex} is
Question 13 :
A metal ball falls from a height of 1 m on to a steel plate and jumps upto a height of 81 cm. The coefficient of restitution of the ball material is?
Question 14 :
A gun is aimed at a target in a line of its barrel. The target is released and allowed to fall under gravity at the same instant the gun is fired. The bullet will
Question 15 :
Two balls are projected at an angle {tex} \theta {/tex} and {tex} \left( 90 ^ { \circ } - \theta \right) {/tex} to the horizontal with the same speed. The ratio of their maximum vertical heights is
Question 16 :
If {tex} \overrightarrow { \mathrm { A } } = \hat { \mathrm { i } } + \hat { \mathrm { j } } + \hat { \mathrm { k } } {/tex} and {tex} \overrightarrow { \mathrm { B } } = 2 \hat { \mathrm { i } } - \hat { \mathrm { j } } + 4 \hat { \mathrm { k } } {/tex} then the unit vector along {tex} \overrightarrow { \mathrm { A } } + \overrightarrow { \mathrm { B } } {/tex} is
Question 17 :
A body is projected vertically upwards with a velocity {tex} u , {/tex} after time {tex} t {/tex} another body is projected vertically upwards from the same point with a velocity {tex} v , {/tex} where {tex} v < u {/tex}. If they meet as soon as possible, then choose the correct option