Question

PROBLEM 1
The position of a particle on the x axis is given by:
x = 5.00 – 8.00 t + 2.00 t
2
with t in seconds and x in meters.
a) Calculate the value of x the moment the particle momentarily stops.
b) When t = 0.500 s, is the particle speeding up or slowing down? Explain.
PROBLEM 2
A ball is kicked at an angle θ0 with the horizontal with an initial speed of 20.0 m /
s. It reaches a maximum height of 1.00 m.
a) Calculate the angle θ0.
b) What is the speed at the maximum height?
g = 9.8 m / s2
PROBLEM 3
An object of mass 600 g is on a table. The xy coordinate system is in the horizontal
plane of the table. The acceleration of the object is 4.00 m / s2 along the positive x
direction. A force of 15.0 N is applied on the object at an angle of 45.0o with the
positive x axis, and a second force is applied on the object in the xy plane.
Calculate the magnitude and direction of the second force.

Answer 1