- #1

Arne B C

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Thread moved from the technical forums, so no HH Template is shown.

A tractor and a Tesla drives in opposite directions. The tractor has a speed of 40.0km/h and the car has a speed of 80.0 km/h. The Tesla suddenly sees the tractor, and they both immediately start braking, both with constant accelerations of 5.00 m/s2 (opposite to their directions of motion).

a) If the initial distance between the two is 60.0 m, do they hit each other? If so, where, and with what relative speed on impact? If not, what is the distance between the two when they both stop?

vi (tractor) = 40.0km/h

xi (tractor) = 0

ax (tractor) = -5.0 m/s2

vi (car) = -80.0 km/h, since it goes in the opposite direction

xi (car) = 60.0m

ax (car) = 5.0 m/s2Tried to use xf=xi + vxi*t + 0.5*ax*t^2 and do one for the tractor and one for the car, then put them equal to each other. Tried then to take the ABC-formula, but didn't get any results. And now I'm stuck.

a) If the initial distance between the two is 60.0 m, do they hit each other? If so, where, and with what relative speed on impact? If not, what is the distance between the two when they both stop?

vi (tractor) = 40.0km/h

xi (tractor) = 0

ax (tractor) = -5.0 m/s2

vi (car) = -80.0 km/h, since it goes in the opposite direction

xi (car) = 60.0m

ax (car) = 5.0 m/s2Tried to use xf=xi + vxi*t + 0.5*ax*t^2 and do one for the tractor and one for the car, then put them equal to each other. Tried then to take the ABC-formula, but didn't get any results. And now I'm stuck.