Saturday
December 7, 2013

Posts by Abbie

Total # Posts: 85

physics
(a) What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 8.86 m/s when going down a slope for 3.30 s? (b) How far does the skier travel in this time?

physics
In getting ready to slam-dunk the ball, a basketball player starts from rest and sprints to a speed of 8.49 m/s in 1.89 s. Assuming that the player accelerates uniformly, determine the distance he runs.

physics
A car is traveling at a constant speed of 27.1 m/s on a highway. At the instant this car passes an entrance ramp, a second car enters the highway from the ramp. The second car starts from rest and has a constant acceleration. What acceleration must it maintain, so that the two...

physics
A box sits on a horizontal wooden board. The coefficient of static friction between the box and the board is 0.22. You grab one end of the board and lift it up, keeping the other end of the board on the ground. What is the angle between the board and the horizontal direction w...

physics
The citizens of Paris were terrified during World War I when they were suddenly bombarded with shells fired from a long-range gun known as Big Bertha. The barrel of the gun was 36.6 m long and it had a muzzle speed of 1.48 km/s. When the gun's angle of elevation was set to...

physics
A car is speeding up and has an instantaneous speed of 14.0 m/s when a stopwatch reads 9.0 s. It has a constant acceleration of 2.3 m/s2 (b) What is the speed when the stopwatch reads 12.2 s?

physics
A car is speeding up and has an instantaneous speed of 14.0 m/s when a stopwatch reads 9.0 s. It has a constant acceleration of 2.3 m/s2. (a) What change in speed occurs between t = 9.0 s and t = 12.2 s?

Physics
An automobile moving at a constant velocity of 15m/s passes a gasoline station. Two seconds later, another automobile leaves the gasoline station and accelerates at a constant rate of 2m/s^2 in the same direction. How soon does the second autombile overtake the first?

Algebra 2
The first term in an arithmetic series is 7 and the 17th is 49. What is the 20th term?

physics
Thank you so much.

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