Can you answer 5 and 6 pleaase anad show your full working out. Thanks b) the me

Question

Can you answer 5 and 6 pleaase anad show your full working out. Thanks

b) the metal ball m2, assuming it has just been shot out of a cannon 5. Show how y(1)=10 +Agt x(t)=x0 +101+-af and 2 can be combined to yield: (v(t) 2a 6. Your 1.5 kg hovercraft is drifting toward a barrier that you don't want to crash into. it is 1 m away and you are moving toward it at 2 m/s. You have a thruster on the craft that you can point in the opposite direction and fire with a constant force of 2.5 N. If you turn the lift fan off, the coefficient of friction between the hovercraft and the floor is 0.0s. .Would the thruster be enough to stop you before hitting the barrier? · Would friction alone be enough to stop you before hitting the barrier? . What should you do to avoid crashing?

Explanation / Answer

due to thruster only.

a = -F/m =- 2.5/1.5 = -1.67 m/s^2

Applying , vf^2 - v0^2 = 2 a d

0^2 - 2^2 = 2 (-1.67) d

d = 1.2 m

it alone will not be able to stop.

Due to friction:

a = - u m g / m = - u g = - 0.05 x 9.8 = - 0.49 m/s^2

0^2 - 2^2 = 2(-0.49)d

d = 4.08 m

friction alone is also not able to stop.

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use both, thruster and friction.

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