A force of N is applied to an object. How much work is done, in Joules, moving the object from x=1 to x=4 meters?
1.
2. 51 J
3.
4.
A car has a certain displacement between 0 seconds and 2 seconds. If we defined its velocity as v(t)=6t-5, then the displacement in meters is:
1. 1 m
2. 2 m
3. 3 m
4. 4 m
The relation between time t and distance x is , where a and b are constants, the acceleration is
(1)
(2)
(3)
(4)
Given velocity v(t)=. Assume s(t) is measured in meters and t is measured in seconds. If s(0)=0, the position s(4) at t=4s is:
1. 30
2. 31
3. 32
4. 33
The current through a wire depends on time as i =(2+3t) A.
The charge that crosses through the wire in 10 seconds is:
1. 150 C
2. 160 C
3. 170 C
4. None of there
The area of a blot of ink, A, is growing such that after t seconds, \(A=3t^2+\frac{t}{5}+7~m^2\). Then the rate of increase in the area at t= 5s will be :
1. 30.1 m2/s
2. 30.2 m2/s
3. 30.3 m2/s
4. 30.4 m2/s
A particle starts rotating from rest and its angular displacement is given by . Then, the angular velocity at the end of 10 s will be :
1. 0.7
2. 0.6
3. 0.5
4. 0
, where C is a constant, can be expressed as:
1.
2.
3.
4.
If the force on an object as a function of displacement is , what is work as a function of displacement . Assume W(0)=0 and force is in the direction of the object's motion.
1.
2.
3. 6x+1
4.