Water exerting a force
The force exerted by the wind on the sails of a sailboat is Fsail = 370 N north. The water exerts a force of Fkeel = 190 N east. If the boat (including its crew) has a mass of 300 kg, what are the magnitude and direction of its acceleration?
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A pilot claims to have seen a UFO moving initially at a speed of about 429 m/s in an easterly direction and then, in a time interval of only 1.0 s, turning 44°of east and moving at 429 m/s. Compute the UFO's average acceleration during the tur
A supermarket employee pushes cart 1 (with mass m1) horizontally with a force of magnitude F = 851 N. Assume there is no friction anywhere. a) Find the magnitude of the acceleration of the carts.
If the magnitude of the instantaneous velocity at t1 is v1 = 3 m/s, what is the instantaneous velocity v2 at time t2?
Resistances of 1.6 ohm, 4.2 ohm, and 6 ohm and a 16.3 V battery are all in series. Find the potential difference across the first (1.6) resistor. Answer in units of V.
A rifle bullet with a mass of 15.5 g traveling toward the right at 256 m/s strikes a large bag of sand and penetrates it to a depth of 21.4 cm. Determine the magnitude and direction of the friction force (assumed constant) that acts on the bullet
Where should a parent push with a force of 185 N in order to hold the teeter totter level? Where should the parent push with a force of 363 N to keep the teeter totter level?
At 1.15s after liftoff, the rocket clears the top of its launch platform, 63m above the ground. After an additional 4.75s it is 1.00km above the ground. calculate the magnitude of the average velocity of the rocket for:
A projectile is fired at an upward angle of 45° from the top of a 279 m cliff with a speed of 204 m/s. What will be its speed when it strikes the ground below? (Use conservation of energy.)
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