Physics
A car traveling 56 km/h is 22.0 m from a barrier when the driver slams on the brakes. The car hits the barrier 2.15 s later. (a) Assuming constant acceleration, what was the magnitude of the car's acceleration before impact? _______ m/s2 (b) How fast was the car traveling ...
Physics
A stone is thrown vertically upward from outside a window, with an initial velocity of 24.0 m/s. It moves up, and then down to the ground 420 m below the point where it started. Let `up' be positive. (a) What is the maximum height above the window to which the stone rises?...
Physics
nevermind, it's suppose to be negative 93.9. thanks
Physics
thanks, but C is incorrect any idea why?
Physics
A stone is thrown vertically upward from outside a window, with an initial velocity of 24.0 m/s. It moves up, and then down to the ground 420 m below the point where it started. Let `up' be positive. (a) What is the maximum height above the window to which the stone rises...
Physics
A car traveling 56 km/h is 22.0 m from a barrier when the driver slams on the brakes. The car hits the barrier 2.15 s later. (a) Assuming constant acceleration, what was the magnitude of the car's acceleration before impact? _______ m/s2 (b) How fast was the car traveling ...
Physics
A jogger runs eastward in a straight line with an average speed of 2.25 m/s for 4.98 min and then continues with an average speed of 1.58 m/s for 2.18 min. (Hint: time is in minutes and velocity is in meters/second) (a) What is her total displacement (in m)? _____________m (b)...
Physics
The strength of attraction, Fm, between two magnets can be described as Fm~1/d2. You separate the two magnets from d=1 cm to d=7 cm. a) Does the strength of attraction increase or decrease? -decrease -increase b) By what factor does Fm change? -1/36 -49 -36 -1/49 -6 -1/6 -1/7 -7
Physics
95LBS AND C
Physics
A sign whose weight is 95 lbs is held up by a chain. (1) With what force does the chain need to be pulled up to keep the sign in place? ___________ lbs (2) Jenna writes a mathematical description, 95 lbs + - 95 lbs = 0. What does the sign of each number represent? MULTIPLE CHO...
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