shubham14

A sprinter is 50m behind marathoner. The sprinter is moving at 10m/s and the marathoner is moving at 6m/s. When will the sprinter cath the marathoner? Choose closet answer between 12seconds  and 10seconds

A car has an initial velocity of 12 metres per second. It accelerates for 30 seconds

with an acceleration of 2m/s^2

(a) Illustrate this with a velocity-time graph. 

(b) Calculate the final velocity. 

(c) Calculate the distance the car travels.

An object of mass 31 kilograms is on a smooth horizontal plane and a force of

124 Newtons is applied to the object in a horizontal direction (friction is zero).

The object is initially at rest. Calculate

(a) the acceleration of the object 

(b) the velocity of the object after 5 seconds 

(b) the kinetic energy of the object after it moves 14 metres.

A rocket is initially at rest at ground level. It then accelerates vertically upwards

from rest with a constant acceleration of 18 metres per second per second. Calculate

(a)The time the rocket takes to reach an altitude of 900 metres. 

(b)The velocity of the rocket when its height is 2000 metres.

An object of mass 8 kilograms is on a smooth plane inclined at 35 degrees to the

horizontal (friction is zero). Initially the object is moving down the plane with a

velocity of 12 metres per second. Calculate

(a) the acceleration of the object down the plane. 

(b) the distance down the plane the object travels in 7 seconds

Integrate .

Integrate .

How many unique ways are there to arrange the letters in the word ERROR?

In how many ways can you order 5 people in a row?  In how many ways can you place the same people in a circle?  Are both answers the same? Why not?

  Glenda paid $24 for 6 books. What is the rate that Glenda paid for each book?

Find all solution of the equation.

How to integrate from  ?

integrate ln x from 0 to 1

Integrate 1/(1+x2) for limit [0,1].

State the law of conservation of energy in a complete sentence.