Answer:
Mars is 1.52 times as far from the Sun as Earth is. Predict the time required for Mars to orbit the Sun in Earth days.
Explanation:
Answer:
The fraction of the ball's kinetic energy stored in the spring is 3.6KJoules
Explanation:
Given
Mass of ball =0.5kg
Velocity of ball =120m/s
The kinetic energy stored by the ball is expressed as
K.E=1/2(m*v²)
Substituting our data into the expression we have
K. E=(0.5*120²)/2
K. E=7200/2
K.E=3,600 JOULE
K.E=3.6KiloJoules
Answer:
Yes, the velocity of the object can reverse direction when its acceleration is constant. For example consider that the velocity of any object at any time t is given as: ... At At t = 0 sec, the magnitude of velocity is 2m/s and is moving in the forward direction i.e.v (t) = -2.
Answer:
The force constant for each elastic band is 77.93 N/m
Explanation:
Hooke's law of a spring or an elastic band gives the relation between elastic force (Fe) and stretching (x), the magnitude of that force is:
(1)
With k, the elastic force constant. The three elastic bands support the child’s weight (W) and maintain him at rest, so by Newton’s second law for one of the elastic bands:
(2)
(3)
Using (1) on (3):
(4)
Answer:
D) The variable shown by letter C would result in a movement of the object to the right.
Explanation:
