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A scalar is a value that has only a size (otherwise known as magnitude), not a direction. A scalar is unaffected by the direction in which the object concerned is travelling. Examples include kinetic ener...

Think about the definition of acceleration - it is the rate of change of velocity. Your statement that the object's speed is constant is correct, can you think about why the object's velocit...

Angle through which the earth rotates = 2pi

Time to do so = 246060 = 86400s

Angular velocity = 7.3x10^-5rads^-1

Lets consider a skydiver jumping from an airplane. Once the skydiver has let go of the plane they are pulled towards the earth due to gravity.

By Newton’s second law:

F = ma,

the sky ...

First, find the speed of the ball in the horizontal (x) and vertical (y) directions. u_x = ucos(30) = 8.66m/s and u_y = usin(30) = 5 m/s. Using an appropriate suvat equation f...