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A toy car slides straight off a 4.1 m high book shelf at a velocity of 2.8 m/s.
a) How long does it take for the toy car to hit the ground?
b) what is the range of the car?
Consider the boilers made up of different layers of conducting materials. How the heat conduction takes place in such an arrangement when they are connected in series and parallel?
a ring of uniform mass m and radius r is placed in y-z plane with centre at the origin. a particle of mass m is released from point p(x=r) (OQ=r/root2) then force acting on origin is?
all surfaces are smooth,pulleys and strings are ideal. Masses of each block is 1 kg. if aA, aB are the acceleration of block a and b respectively then the value of aA is?
Two balls are thrown simultaneously, A vertically upward with a speed of 20m/s from the ground , and B vertically downward from a height of 40m with the same speed along the same line of motion . At what point do two balls meet ?
A particle is displaced 60 cm to the north and then is given a second displacement of 90 cm directly to the east. What is the average velocity of the particle if it covers the entire displacement within 2.15 seconds?
An inclined plane makes an angle of with the horizontal. Find the constant force, applied parallel to the plane, required to cause a box to slide (a) up the plane with acceleration 1.2 m/s² and (b) down the incline with acceleration 1.2 m/s². Neglect friction forces.
A 12-kg box is released from the top of an incline that is 5.0m long and makes an angle of 40° to the horizontal. A 60-N friction force impedes the motion of the box. (a) What will be the acceleration of the box? (b) How long will it take to reach the bottom of the incline?
A simple pendulum is found to vibrate 50 times within 200s. When 1.5m of its length is reduced to a certain length, it vibrates 50 times in 175s. Find the original length of the pendulum.
A 300g mass hangs at the end of a string. A second string hangs from the bottom of that mass and support a 900g mass. (A) find the tension in each string when the masses are accelerating upward at 0.700m/s². (b) Find the tension in each string when the masses are accelerating downward at 0.700m/s².
