Finding Average Velocity
Trending Questions
- 2v1v2v1+v2
- 5v1v23v1+2v2
- 12√v1v2
- v1+v22
Define distance, displacement, speed, velocity and acceleration.
- 25 km/h
- 24 km/h
- 50 km/h
- 5 km/h
If a bullet of mass 5 gm moving with velocity 100 m/sec, penetrates the wooden block upto 6 cm. Then the average force imposed by the bullet on the block is
417 N
830 N
Zero
8300 N
- 1 cm
- 2 cm
- 4 cm
- 4 cm
A car starts from rest and accelerates uniformly for 10 sec to a velocity of 8 m/s.it then runs at a constant velocity and is finally brought to rest in 64 meters with a constant retardation. The total distance covered by the car is 584 meters. Find the value of acceleration, retardation and total time taken.
- 5 m/s
- 4 m/s
- 4.5 m/s
- 3.5 m/s
At what temperature will the speed of sound be double of its value at 0∘C ?
One car moving on a straight road covers one-third of the distance with and the rest with . The average speed is
A driver in a car, approaching a vertical wall, notices that the frequency of his car horn has changed from to when it gets reflected from the wall. If the speed of sound in air is , then the speed of the car is:
A car sounding its horn at moves towards a high wall at a speed of . If the speed of sound is , the frequency of the reflected sound heard by the girl sitting in the car will be closest to?
A particle has an initial velocity and an acceleration of . Its speed after is
- v0+v1+v23
- 2v0+v1+v23
- v0+2v1+2v23
- 2v0(v1+v2)(2v0+v1+v2)
- 3 m/s
- 113 m/s
- 83 m/s
- 43 m/s
- √32
- 1
- 12
- 1√3
- 70∘C±0.5∘C
- 30∘C±1∘C
- 30∘C±0.5∘C
- 70∘C±1∘C
- 30
- 28
- 40
- 35
- v0+v1+v23
- 2v0+v1+v23
- v0+2v1+2v23
- 2v0(v1+v2)(2v0+v1+v2)
A stone is thrown upwards from the top of a tower 85 m high . It reaches the ground in 5s . Calculate
1) the greatest height above the ground
2) the velocity with which it reaches the ground
3) the time taken to reach the maximum height.(g=10 m/ s2)
What is the rate of change of displacement called?
An aeroplane has to go from a point A to another point B, 500 km away due 300 east of north. A wind is blowing due north at as speed of 20 m/s. The air-speed of the plane is 150 m/s.
(a) Find the directiion in which the pilot should head the plane to reach the point B.
(b) Find the time taken by the plane to go from A to B.
- v13+2v23
- v13+v23
- 2v13+v23
- v1+2v23
Consider the situation of the previous problem. The man has to reach the other shore at the point, directly opposite to his starting point. If he reaches the other shore somewhere else, he has to walk down to this point. Find the minimum distance that he has to walk.
- 5 km/h
- 254 km/h
- 304 km/h
- 458 km/h
- 14 m/.s
- 16 m/.s
- 5 m/.s
- 10 m/.s
In the following example, try to identify the number of times the velocity of the ball changes: "A football player kicks a football to another player of his team who kicks the football towards the goal. The goalkeeper of the opposite team collects the football and kicks it towards a player of his own team". Also, identify the agent supplying the force in each case.
on turning a corner a car driver driving at 36 km per hour find the side on the road 55m ahead he immediately applies brakes so as to stop within 5 M of the child calculate the retardation produced and the time taken by the car to stop