Question

object covers a distance of 20 metre with a speed of 5 metre per second and then accelerated constantly for a distance of 12 and then with acceleration of 1 metre square and then what to do to increase of 7 second find the average speed of object​

Answer 1

Answer: You need to learn this list of symbols and what they represent.

s displacement (distance)

u starting (initial) velocity

v fi nal velocity

a acceleration

t time

Displacements, velocities and accelerations have directions as well as sizes (or magnitudes).

You can derive the formulae for motion in a straight line with constant acceleration.

• acceleration  

change in velocity _________________

change in time • distance moved  average speed  time

a  

_____ v u

t average speed  

_____

u v

2

v  u  at s  ( ______

u  v

2 )t

For an object moving horizontally, the positive direction is

usually taken as left to right. The starting point of an object

is usually taken as the origin from which displacements are

measured.

For P: s  4 m and v  2.5 m s1

For Q: s  3 m and v  6 m s1

Explanation: