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!
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
80 m/s2 up
80 m/s 2 up
-5 m/s² (APEX)
If your speed slows down, yYou will have negative acceleration or deceleration.
Acceleration(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.
the magnitude of the skydivers acceleration is zero as he is decelerating by opening his parachute!
Retardation or negative acceleration or deceleration.
-2 m/s^2
Retardation or negative acceleration or deceleration.
Deaccelration.
When an object slows down it is still accelerating.
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