Answer:
d = .076 m
Explanation:
The time for frog A can be calculated from equation of motion
where v_f is final velocity, a is acceleration due to gravity
so from given data we have
t = 0.112 sec
Now we will use that time for frog B
(Note its positive)
For the displacement
d = .076 m
Answer:
The angular acceleration is same at all the points in the body.
Option (D) is correct.
Explanation:
Given:
When a rigid body rotates about a fixed axis, all the points in the body have the same,
For finding which quantity is same we use pure rotational concept,
Where angular frequency,
radius of rigid body
When a rigid body rotates about a fixed axis angular velocity of all the points in the body are same.
But the tangential speed, tangential acceleration, linear displacement, and centripetal acceleration depend on the position of the points and hence they are not the same.
Therefore, the angular acceleration is same at all the points in the body.