Answer:
10.25 seconds
Explanation:
Divide 400/39, leaves you with how many seconds it takes to travel that distance.
It's nice that this problem has everything in meters already, so that you don't have to do any unit conversions.
Distance 8 mi, Displacement 0mi
Explanation:
Average speed =total distance ÷ total time
speed = d ÷ t
d= 74400
t= 16
then,
speed = 74400÷16
=4650
Answer:
Final speed of the rocket,
Explanation:
It is given that,
Impulse delivered by an engine, J = 3.5 kg-m/s
Mass of the rocket, m = 120 g = 0.12 kg
To find,
The final speed of the rocket
Solution,
We know that the impulse is equal to the product of mass and velocity o it is equivalent to the change in momentum of an object.
So, the final speed of the rocket once the engine has fired is 29.16 m/s.
The answer is A, the graph would have a horizontal shape. The answer is A.