(b) A truck, of mass 1250kg, hcading north crossed the median on the Jasper Highway, then slammed head-on at 25 ms into a 625 kg car
I
heading south at 30 ms
-1
(1) What was the initial momentum of the truck?
(ii) What was the initial momentum of the car?
(iii) Assuming the car and truck move as one following the collision,
what is the speed and direction of the wreck right after the
collision?
Total 15 marks

What quantity do units represent in value

Aleaky 10-kg bucket is lifted from the ground to a height of 15 m at a constant speed with a rope that weighs 0.7 kg/m. initially the bucket contains 45 kg of water, but the water leaks at a constant rate and finishes draining just as the bucket reaches the 15-m level. find the work done. (use 9.8 m/s2 for g.) show how to approximate the required work by a riemann sum. (let x be the height in meters above the ground. enter xi* as xi.) lim n → ∞ n (9.8)(45−3 xi) i = 1 δx express the work as an integral. 0 dx evaluate the integral. (round your answer to the nearest integer.) j

Aball of mass 0.3kg is released from rest at a height of 8m. how fast is it going when it hits the ground? accleration due to gravity is g=9.8m/s