Which has the greater acceleration, an airplane, that goes from 1000 km/h to 1005 km/h in 10s or a skateboard that goes from zero to 5km/h in 1 second?

What is the acceleration of a race car that moves at constant velocity of 300 km/h ?

If a car at rest, accelerates uniformly to a speed of 144 km//h in 20s , it covers a distance of

What is the deceleration of a vehicle moving in a straight line that changes its velocity from 100 km/h to a dead stop in 10s?

Find the magnitude of acceleration due to gravity at height of 10 km from the surface of earth.

The earth has a radius of 6400 km. The inner core of 1000 km radius is solid. Outside it, there is a region from 1000 km to a radius of 3500 km which is in molten state. Then again from 3500 km to 6400 km the earth is solid. Only longitudinal (P) waves can travel inside a liquid. Assume that the P wave has a speed of 8 kms^(-1) in solid parts and of 5 kms^(-1) in liquid parts of the earth. An earthquake occurs at some place close to the surface of the earth. Calculate the time after which it will be recorded in a seismometer at a diametrically opposite point on the earth if wave travels along diameter ?

A car starts from rest and moves with uniform acceleration for time t then it moves with uniform speed of 60 km/h for time 3t and comes to rest. Find the average speed of car in its total journey.

A bus decreases its speed from 80 km h^(-1) to 60 km h^(-1) in 5s. Find the acceleration of the bus.

What is the average speed of the car if it covers 200 km in 5 h?

A man used his car. The initial and final odometer readings are 4849 and 5549 respectively. The journey time is 25h. What is his average speed during the journey? km/h and another airplane travels due south at 300 km/h Are their speeds the same? Are their velocities the same? Explain.