Average speed of the car
A car travels 40 kilometers at an average speed of 80 km/hr and then travels 40 kilometers at an average speed of 40 km/hr. the average speed of the car for this 80 km trip is:
a. 48 km/hr
b. 60 km/hr
c. 53 km/hr
d. 40 km/hr
e. 45 km/hr
Expected delivery within 24 Hours
A plane traveling at 400 mph is flying with a bearing of 40 degrees. there is a wind of 50 mph from the south. if no correction is made for the wind, what are the final ground speed of the plane (treat each velocity as a vector)?
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You drop a single coffee filter of mass 1.7 grams from a very tall building, and it takes 52 seconds to reach the ground. In a small fraction of that time the coffee filter reached terminal speed. (a) What was the upward force of the air resistanc
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