Given, a = -3.2m/s²
v = 5m/s
t = 10s
u = ?
Using kinematic equation,
v = u + at
5 = u -3.2* 10
5 = u - 32
u = 32 + 5
u = 37 m/s
Answer: I'm not sure, but I think it would be a <em>total lunar eclipse </em>
Answer:
as the ball is thrown, the enegry rises up, when it falls, the ball relseases all energy
Explanation:
Answer : The acceleration of the elevator is,
Explanation :
Formula used to calculate the acceleration of the elevator is:
where,
F = force = 844 M
m = mass of man = 70 kg
g = acceleration due to gravity =
a = acceleration of the elevator = ?
Now put all the given values in the above formula, we get:
Thus, the acceleration of the elevator is,
Answer:
The magnitude of the resultant decreases from A+B to A-B
Explanation:
The magnitude of the resultant of two vectors is given by
where
A is the magnitude of the first vector
B is the magnitude of the second vector
is the angle between the directions of the two vectors
In the formula, A and B are constant, so the behaviour depends only on the function . The value of are:
- 1 (maximum) when the angle is 0, so the magnitude of the resultant in this case is
- then it decreases, until it becomes 0 when the angle is 90 degrees, where the magnitude of the resultant is
- then it becomes negative, and continues to decrease, until it reaches a value of -1 when the angle is 180 degrees, and the magnitude of the resultant is