deekshith

The position of an object as a function of time is given by, 

where t is in seconds. What is the magnitude of the acceleration of the object?

Which of the following may lead to cancer?

A mutation in the gene

A fault in the DNA repair procedure

Loss of control over the cell cycle

All of the choices

An object moves along the x-axis with its position x given as a function of time t by: 

What is the object's velocity as a function of time?

An object is moving along the axis so that its distance from the origin at time t is given by:

x= 1/6t^4+13/6t^3-10t^2+t

(a) what is the velocity of the object at time t=6 seconds? 

(b) at what time is the acceleration of the object equal to 4m/s^2 ?

An object of mass 80 kilograms is placed on an inclined plane that makes 20

degrees with the horizontal.  The coefficient of friction is 0.25.  Calculate

(a) the normal reaction of the plane on the object

(b) the frictional force

g=10m/s^2                                                                                                           

Samantha pushes a 50N crate up a ramp 25.0m in length and inclined at 10 degrees with the horizontal. What potential energy change does the crate experience