Salma takes 15 minutes from her house to reach her school on a bicycle. If the bicycle has a speed 2m//s, calculate the distance between her house and the school.

A particle is thrown vertically upwards from the top of a tower with a certain velocity and takes 8s to reach the foot of the tower. The same when thrown with the same speed downwards, it reaches the foot of the tower in 2s. Calculate what time the particle would take to reach the foot of the tower when dropped freely. Taking g=9.8ms^(-2) calculate the height of the tower and the initial speed of the projectile.

Salini plants 4 saplings, in a row, in her garden. The distance between two adjacent saplings is frac{3}{4}m . Find the distance between the first and the last sapling.

To conduct Sports Day activities, in your rectangu- lar shaped school ground ABCID, lines have been drawn with chalk powder at a distance of 1m each. 100 flower pots have been placed at a distance of 1 m from each other along AD, as shown in the following figure. Niharika runs 1/4th the distance AD on the 2^(nd) line and posts a green tlag. Preet runs 1/5th the distance AD on the eighth line and posts a red tlag What is the distance between both the flags? If Rashmi has to post a blue flag exactly halfway between the line segment joining the two flags, where should she post her flag?

A telescope of aperture 0.15 m is used to view two heavenly separated by a certain linear distance. If the distance of these two is 1 million light years from the earth and the wavelength of light emitted is 449 nm, the calculate the linear separation between them.

A ball is thrown at an angle of 30^(@) with respect to the horizontal from the top of a tower 100m high with a speed of 40ms^(-1) . Calculate the time taken by the ball to reach the foot of the tower. With what velocity will the ball hit the ground ? (g=10ms^(-2))