A car moving on a straight road covers one third of the distance with 20 km/hr and the rest with 60 km/hr. The average speed is
The displacement of a particle, moving in a straight line, is given by s=2t²+2t+4 where s is in metres and t in seconds. The acceleration of the particle is
If displacement of a particle is directly proportional to the square of time. Then particle is moving with
A body starts from the origin and moves along the x-axis such that velocity at any instant is given by (4t³-2t) where t is in second and velocity is in m/s. What is the acceleration of the particle, when it is 2m from the origin?
A particle is moving eastwards with velocity of 5 m/s. In 10 sec the velocity changes to 5 m/s northwards. The average acceleration in this time is
The average velocity of a body moving with uniform acceleration travelling a distance of 3.06 m is 0.34 ms–1. If the change in velocity of the body is 0.18ms–1 during this time, its uniform acceleration is
A particle travels 10m in first 5 sec and 10m in next 3 sec. Assuming constant acceleration what is the distance travelled in next 2 sec
If a body having initial velocity zero is moving with uniform acceleration 8m/s² the distance travelled by it in fifth second will be
The engine of a car produces acceleration 4m/sec2 in the car, if this car pulls another car of same mass, what will be the acceleration produced
If a body is thrown up with the velocity of 15 m/s then maximum height attained by the body is (g = 10 m/s2)
A man drops a ball downside from the roof of a tower of height 400 meters. At the same time another ball is thrown upside with a velocity 50 meter/sec. from the surface of the tower, then they will meet at which height from the surface of the tower
A very large number of balls are thrown vertically upwards in quick succession in such a way that the next ball is thrown when the previous one is at the maximum height. If the maximum height is 5m, the number of ball thrown per minute is (take g=10ms¯² )
A particle is thrown vertically upwards. If its velocity at half of the maximum height is 10 m/s, then maximum height attained by it is (Take g=10 m/s2)
A stone is shot straight upward with a speed of 20 m/sec from a tower 200 m high. The speed with which it strikes the ground is approximately
A body freely falling from the rest has a velocity ‘v’ after it falls through a height ‘h’. The distance it has to fall down for its velocity to become double, is
A body sliding on a smooth inclined plane requires 4 seconds to reach the bottom starting from rest at the top. How much time does it take to cover one-fourth distance starting from rest at the top
By which velocity a ball be projected vertically downward so that the distance covered by it in 5th second is twice the distance it covers in its 6th second (g=10m/s²)
Water drops fall at regular intervals from a tap which is 5 m above the ground. The third drop is leaving the tap at the instant the first drop touches the ground. How far above the ground is the second drop at that instant
An electron starting from rest has a velocity that increases linearly with the time that is v=kt, where k=2m/sec² The distance travelled in the first 3 seconds will be
The motion of a particle is described by the equation u=at . The distance travelled by the particle in the first 4 seconds
