Answer:
Acceleration:
Explanation:
The acceleration of an object is equal to the rate of change of velocity:
where
u is the initial velocity
v is the final velocity
t is the time taken for the velocity to change from u to v
For the space probe in this problem, we have:
u = 100 ft/s (initial velocity)
v = 5000 ft/s (final velocity)
t = 0.5 s (time taken)
Therefore, the acceleration is
Answer:
Option C
Explanation:
From the question we are told that:
Mass
Radius
Time
Generally the equation for Tension is mathematically given by
Therefore
, toward the center of the circle
Option C
Answer:
Explanation:
Given
Man takes 3 s while running along the sidewalk
and 15 s while running opposite to sidewalk
Let the speed of man and sidewalk be v and v_0 and distance between the two endpoints of sidewalk is x
Now ----------1
Also ----------2
Divide 1 & 2