A car starts from rest and moves with uniform acceleration of 0.3 meter per second. After 30 second, find the velocity of the car and distance covered?
V = Vo + a*t = 0 + 0.3*30 = 9 m/s.
d = (V^2-Vo^2)/2a = (9^2-0)/0.6 = 135 m.
To find the velocity of the car, we can use the formula:
Velocity (v) = Initial velocity (u) + (Acceleration (a) * Time (t))
In this case, the car starts from rest, so the initial velocity is 0 m/s. The acceleration is given as 0.3 m/s², and the time is given as 30 seconds.
Plugging in the values:
v = 0 + (0.3 * 30)
v = 0 + 9
v = 9 m/s
Therefore, the velocity of the car after 30 seconds is 9 m/s.
To find the distance covered by the car, we can use the formula:
Distance (s) = (Initial velocity (u) * Time (t)) + (0.5 * Acceleration (a) * Time (t)²)
Again, the initial velocity is 0 m/s, the acceleration is given as 0.3 m/s², and the time is given as 30 seconds.
Plugging in the values:
s = (0 * 30) + (0.5 * 0.3 * 30²)
s = 0 + (0.5 * 0.3 * 900)
s = 0 + 135
s = 135 meters
Therefore, the car covers a distance of 135 meters in 30 seconds.