Answer:
- 0.25m/s²
Explanation:
Given parameters:
Initial velocity = 40m/s
Final velocity = 30m/s
Time taken = 40s
Unknown:
Acceleration of the car = ?
Solution:
Acceleration is the rate of change of velocity with time.
So;
Acceleration =
Acceleration = = - 0.25m/s²
This implies that the car will decelerate at a rate of 0.25m/s²
Answer:
Explanation:
Initial speed of the electron, u = 0
The charge per unit area of each plate,
Separation between the plates,
An electron is released from rest, u = 0
Using equation of kinematics,
..........(1)
Acceleration of the electron in electric field, ............(2)
Electric field, ............(3)
From equation (1), (2) and (3) :
v = 10840393.1799 m/s
or
So, the electron is moving with a speed of before it reaches the positive plate. Hence, this is the required solution.