A boat heads northwest at 20k(m)/(h) in a river that flows east at 6k(m)/(h). What are the mognitude and direction of the boat's velocity relativeto the earth's surfoce?

42) A man wants to cross a SOD m wide. His rowing speed (relative to river 3000 m/h. The river flows with a of the water ) is the man's ualking peed Aowing & walking) he should take to get the point disctly opposite his star ting point in the shortest time ? b). How long does it take?" speed on shore is 5000 m/h. a). find the path (combined 2000 m/h. If

need help on incorrect answers.

A solid steel ball is thrown directly downward, with an initial speed of 8.45 m/s, from the top of a building at a height of 30.2 m. How much time (in s) does it take before striking thes ground? Need Help? Read It

You drive West 30.0 km at 85 km/h and then drive East another 60.0 km at 95 km/h. Your average velocity for the entire drive will be... How would I go about solving this problem?

i have a question with problem 7

Mr Garcia is standing from a 100 ft tower where he throws a ballvertically into the air with an initial velocity of 50 feet per second.Mr Cruz, who is standing at the ground, also throws the ball thathe holds vertically at the rate of 75 feet per second the same timeas Mr. Garcia’s. (a) Equation of displacement as a function of time of Mr Garcia’sball(b) Equation of displacement as a function of time of Mr Cruz’sball(c) Equation relating the displacements of the ball of Mr Garciaand Mr Cruz(d) Determine the time in seconds when both balls be at the sameheight from the ground.(e) Also, determine the position of the ball of Mr Cruz (inreference to the ground) in feet when both balls are at thesame height.

Given: X - coordinate: x = -5.00sinwt, where w is constant, xis meters, andt is seconds y - coordinate: y = 4.00 - 5.00coswt, where w is constant, y in meters, andt seconds What is the expression for velocity vector? O A. 5w(coswti+sinwi) O B. 5w(-coswtî+sinwî) O C. 5w(coswti-sinwj) O D. 5w(-coswti-sinwî)

Verify the ranges for the projectiles (a) forθ = 45º and the given initial velocities. Verify the ranges shown for the projectiles in Figure3.41(b) for an initial velocity of 50 m/s at the given initialangles

A juggler throws an orange vertically into the air at 4.73 . How long does it take the or- ange to return to the juggler's hand? 0.964 s 4.82 s 37.5 s D. 1010 s