Answer:
a)
b)
Explanation:
From the exercise we got final position, final velocity and how much time does it takes the body to cover the distance
From the concept of moving objects we know the following equations:
and
Now, we have two equations with two unknowns
(1)
Now, we need to replace (1) in the other equation
Solving for a
b)
Now, we can solve (1)
a)
Answer:
520000 or 520000 pa
Force = 520N
Area of contact = 0.001
Pressure: 520000 or 520000
Yes, by golly. The car is accelerating. Changing direction is one form of acceleration, even if the speed doesn't change.
The speed of spaceship moving is 2.4 x 10^8 m/s
As from the given data, the clock in a spaceship is observed to run at a speed of 3/5 of a similar clock that rest on the earth is
T/T° = 3/5
The expression for the time dilation is given by
T = γT°
γ = T/T°
γ = 1/√1 - v^2/c^2 is time dilation
Substituting the values in the above equation as,
γ = T/T°
5/3 = 1/√1 - v^2/c^2
v^2/c^2 = 16/25
v = 0.8 c
v = 0.8 x 3 x 10^8 m/s
v = 2.4 x 10^8 m/s
Hence, speed of spaceship moving is 2.4 x 10^8 m/s
Learn more about Speed here:
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