A police van moving on a highway with a speed of 30 km h–1 fires a bullet at a thief’s car speeding away in the same direction with a speed of 192 km h–1. If the muzzle speed of the bullet is 150 ms–1, with what speed does the bullet hit the thief’s car (as, seen by thief). According to thief in the car ?
A bucket is placed in the open where the rain is falling vertically. If a wind begins to blow horizontally at double the velocity of the rain, how will be rate of filling of the bucket change?
A train is standing on a platform , a man inside a compartment of a train drops a stone . At the same instant train starts to move with constant acceleration . The path of the particle as seen by the person who drops the stone is :
A battalion of soldiers is ordered to swim across a river 500 m wide . At what minimum rate should they swim perpendicular to river flow in order to avoid being washed away by the waterfall 300m The speed of current being 3 m/sec :
A man who is wearing a hat of extended length of 12 cm is running in rain falling vertically downwards with speed 10 m/s. The maximum speed with which man can run, so that rain drops do not fall on his face (the length of his face below the extended part of the hat is 16 cm) will be:
