Mechanics | Relativity Answers

two straight line drawn on same displacement time graph and make 30 degree and 60 degree with time axis . which represent greater velocity also find ratio of velocity?

consider a satellite in space and its horizontal velocity is less than critical velocity then what is direction of satellite ?

a free falling body crosses point P,Q and R with velocities V,2V AND 3V.find the ratio of the distance PQ to QR.

a plane flying horizontally at 100 m/s at a height of 1000 m releases a bomb. find
i) the time taken to reach the ground.
ii) the distance of the target

good morning please tell

if v and u are two vectors and r is their resultant and r is perpendicular to v and 1/2 of u then what is angle between v and u

A man is travelling in a straight field.After 10m he makes a 60 degree turn to his left.After 8 such turns what will be his total displacement?

An Atwood machine consist of a single pulley about an axis through it centre and perpendicular to its plane.the length of the inextensible string connecting the two masses and going over the pulley is L. Calculate the acceleration of the system.

a boat which a speed of 5 km/hr in still water crosses a river of width 1km along the shortest possible path in 15 minutes calcute the velocity of river water in km/hr

When a volcano erupts, it emits smoke and lava in all direction with a velocity of 280m/s. The height of volcano is 5 km amd there is a house located at a distance of 8 km from the centre of the mountain. 5s after an eruption, a group of people start fleeingfrom the house in a car that can run at a maximum speed of 90km/h.

Assuming that they travel in a straight line away from the volcano, what additional distance should they have covered to escape the fireball?

a projectile has a max height of 20 m and a range of 30 m. what is the initial velocity?