Answer:
The boat's velocity relative to Earth is 3.91 m/s.
Explanation:
Given;
speed of ferry due north, = 2.5 m/s
speed of the river to the east, = 3.0 m/s
The boat's velocity relative to Earth is given by;
Therefore, the boat's velocity relative to Earth is 3.91 m/s.
Newton's Second Law of Motion states, “The force acting on an object is equal to the mass of that object times its acceleration.” We calculate as follows:
F = ma
At the moon,
104 N = m(1.61 m/s^2)
m = 64.60 kg
Mass will still be the same when on earth since mass is conserved.
At earth,
F=ma
F = 64.60 kg (9.8 m/s^2)
F = 633.04 N <----ANSWER
Acceleration is constant in free fall. So it would again be 9.8 m/s².
Answer:
Explanation:
The speed of hare = .15 x 25 = 3.75 m /s . Let tortoise took t second to complete the race .
Distance traveled by it = .15 t
Distance traveled by hare = .15 t - .35 m
Time taken by hare to complete this distance
= t - 5 x 60 s
Speed of hare
= Distance / time
( .15t-.35 ) / t - 300 , so
t = 312.40
= 5 minutes 12.4 seconds
Distance of race
312.4 x speed of tortoise
= 312.4 x .15
= 46.85 m