A projectile of mass 0.15 kg is fired horizontally giving it a speed of 10 m/s from the top of a cliff of height h = 2m. The projectile slides across the flat rough surface, friction causing it to
slow down (ux = 0.6). The projectile, with its new smaller speed falls from the cliff landing a
distance x away from the base of the cliff.
a) With what horizontal velocity does the projectile leave the cliff?
b) How far does the projectile land, distance x measured from the base of the cliff?
c) With what speed does the projectile hit the floor?
25 200 cm
kl.
2

The midpoints? a, b, and c are marked on the histogram. match them to the indicated scores. which? scores, if? any, would be considered? unusual?

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

The chart shows the costs and shipping times for materials that a company needs to build a new product. which describes the best trade-off if the company needs to start building their product within the next two years? they should order the domestic materials because it is always best to choose the fastest shipping time. they should order the imported materials because it is always best to choose the lowest cost for materials. since the shipping time is longer, they should order the domestic materials because the additional cost is worth it to get the materials in time. even though the shipping time is longer, they should order the imported materials because they are less expensive and should arrive in plenty of time to build the product.