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A dog chases a cat across the 15m yard before the cat climbs a 4m tree. What is the finalndisplacement lf the cat?
Question #170676
Calculate the divergence of the following vector functions:
Vb = xy X +2yzY +3zx Z
A. An object at rest moving at a constant velocity of 5m/s? What is the instantaneous velocity of the object at 3s? What is the position of the object at 15s? What is the slope?
B. An object moving with a constant acceleration of 5m/s^2
C. An object at the position of 10 m remains at its position over 10s? What is the instantaneous velocity of the object at 2s? What is the position of the object at 7s? What is the slope?
Calculate the resultant vector for the following forces:
1) N = 8.9/ Direction = 39.0˚
FR =
2) N = 15.5/ Direction = -149.1˚
FR =
Estimate the number of gallons of gasoline consumed by the total of all automobile drivers in the U.S., per year. (There are about 3 x 108 people in the U.S. Assume that half of them have cars, that they drive an average of 12,000 miles per year, and that their cars get an average of 20 miles per gallon of gasoline.)
A cliff is 20 m above the ground. A boy rolls a ball off the edge with an unknown initial velocity and it strikes the ground a distance of 3 m horizontally away. Calculate (a) the ball’s initial velocity, (b) its time of flight, and (c) the magnitude and direction of its velocity when it strikes the ground
A boy walked 22 m East, then 43 m West, and then 3 m East. What is total distance travelled and displacement?
1. Speed is 72 km/h. Convert km/h to m/s.
Ans.:
