Wiki User
∙ 14y agoAcceleration(a) = [final velocity(v) - initial velocity(u)] / time(s)
Algebrtaically
a = [ v - u ] / s
A negative result indicates deceleration
a = [20 - 40 ]= / 4
a = [-20] / 4
a = -5 m/s^(2)
This is negative which matches the question of slowing down/deceleration.
lenpollock
Wiki User
∙ 14y ago-5 m/s2
You can't figure "acceleration" from this information. Maybe you meant "Deceleration"? Ask again.
the magnitude of the skydivers acceleration is zero as he is decelerating by opening his parachute!
(change in velocity)/(change in time)=avg. acceleration (-30 m/s)/(15s)= -2 m/s2
If the 0.75 refers to seconds, then his acceleration is -66.66... (repeating) metres per second^2.
80 m/s2 up
-5 m/s² (APEX)
You can't figure "acceleration" from this information. Maybe you meant "Deceleration"? Ask again.
If your speed slows down, yYou will have negative acceleration or deceleration.
the magnitude of the skydivers acceleration is zero as he is decelerating by opening his parachute!
When an object slows down, it still has acceleration, but the acceleration is negative (deceleration). Deceleration is a decrease in the velocity of an object over time.
Retardation or negative acceleration or deceleration.
-2 m/s^2
If the 0.75 refers to seconds, then his acceleration is -66.66... (repeating) metres per second^2.
(change in velocity)/(change in time)=avg. acceleration (-30 m/s)/(15s)= -2 m/s2
66.7 m/s2
80 m/s2 up
80 m/s 2 up