Answer:
4 m/s
0.82 s
Explanation:
h = height to which the fox jumps = 81 cm = 0.81 m
v₀ = speed at which the fox leaves the snow
v = speed of the fox at highest point = 0 m/s
a = acceleration due to gravity = - 9.8 m/s²
Using the kinematics equation
v² = v₀² + 2 a h
0² = v₀² + 2 (- 9.8) (0.81)
v₀ = 4 m/s
t = amount of time in air while going up
Using the equation
v = v₀ + a t
0 = 4 + (- 9.8) t
t = 0.41 s
T = Total time
Total time is given as
T = 2 t
T = 2 (0.41)
T = 0.82 s
