Arocket weighs 1 x10^7 n while on the surface of the earth.
theignition of its engines results in a lift off force of 1.5 x
10^7n

a) what is the mass of the rocket.
b) what is its acceleration at lift -off
c)how fast will it be moving if it acceleartion at this rates for10
minutes.
d) how high will it be after 10 minutes.

(a)

(b) a =

(c) v' = 2940 m/s

(d) h = 1764 km

Solution:

As per the question:

Weight of the rocket, W =

Lift-off force, F =

Now,

To calculate:

(a) Mass of the rocket:

Calculate the mass from the weight of the rocket:

W = mg

where

m = mass of the rocket

Thus

a = 14.7 - g = 14.7 - 9.8 =

(c) To calculate the velocity:

Use kinematic eqn:

v' = u + at

u = initial velocity = 0 m/s

v' = at =

(d) To calculate the height, h:

Use kinematic eqn:

the independent variable, the one that is intentionally manipulated, is whether or not the car hits the barrier.

the dependent variable, the one that you measure the response in, is the distance that the washers travel.

there are no correct statementd on the list of choices you provided.