It was once recorded that a Jaguar left skid marks that were 290 m in length. Assuming that the Jaguar had a constant accelerati
on of -3.9 m/s/s, determine the speed of the Jaguar before it began to skid to a stop.
1 answer:
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Newton's second law of motion states the following:
In which
is the force, 
is the mass, and 
is the acceleration of the object.
So, the answer is B.
In which
So, the answer is B.
It can be noted that the directions west and north are perpendicular to each other. hence we can use the right angle formula for calculating total distance in these directions. Also South is just negative north. This technique is called euclidean distance norm. It is the basis of Cartesian coordinate system.
Total distance = 3.22 N + 4.75 W +1.90 S
= 1.32 N + 4.75 W
D =
D = 4.93 Km
direction = atan(N/W) = 15.53 deg north of west