Answer:
Explanation:
Net force by which man push the lawn mower is given as
now it is given that 37% of this force is vertically downwards
so we will have
now we also know that
here we have
Now work done by this force to move the lawn mower is given as
Answer:
0.38296 m
1.02132 rad
Explanation:
Angular frequency is given by
Displacement is given by
Velocity is given by
The phase angle is 1.02132 rad
The amplitude is 0.38296 m
The equation is given by
The equation is
Answer:
8271.92 m
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
a = Acceleration
Equation of motion
The height reached at 18 seconds is 2916 m
The velocity at 2916 m is 324 m/s
Maximum height reached by the toy rocket is 2916+5355.92 = 8271.92 m
Answer:
4 seconds
Explanation:
Average acceleration is change in velocity over change in time:
a = Δv / Δt
Δt = Δv / a
Δt = (15 m/s - 5 m/s) / 2.5 m/s²
Δt = 4 s