A 40-cm-diameter, 480 g beach ball is dropped with a 4.0 mg ant riding on the top. The ball experiences air resistance, but the ant does not. Take ρair = 1.2 kg/m3.What is the magnitude of the normal force exerted on the ant when the ball's speed is 3.0 m/s?

Istap. A constant force F = 5.0 [N] is applied at a certain angle from the horizontal on a 0.50 [kg] block that is initially moving to the right at v; = 3.0 [m/s]. If the block stops after traveling a distance s = 0.80 [m], what is the angle in the figure?? F Vi Vf = 0 0. 34° O 79° 124° 56°

A 1.0 kg object has a velocity of 5.0f m/s at t = 0. A constant resultant force of (3.0î + 4.0j ) N then acts on the object for 3.0 s. What is the magnitude of object's velocity at the end of the 3.0 s interval? A B C E 9.8m/s 17.7m/s 9.2 m/s 15.0 m/s 16.3 m/s Lütfen birini seçin: O A ов O D O E

A 30 kg object at the origin and initially at rest experiences a force given by F = 3N vt î + 2N tĵ. What is the object's speed and direction after 20 s?

A 128 lb person steps into an elevator at the ground floor. The elevator accelerates upward at 5.0 ft/s^2 until reaching a velocity of 24 ft/s. It then holds this velocity until decelerating (a=-5.0 ft/s^2) to a stop at the top floor. What is the normal force on the person in each of the three phases of this trip?

14. A 66.0 kg skier with an initial velocity of 9.30 m/s slides up a slope of 35.0° to a height of 2.50 m above where she started. The coefficient of kinetic friction is 0.0750. a. Find the force due to friction on the hill. b. Find the skier's velocity at the top of the hill. V = ? KE₁ Vi 35° 2.5 m

A light plane of mass 1000kg makes an emergency landing on a short runway. With its engine off, it lands on the runway at a speed of 40m⋅s-1 . A hook on the plane snags a cable attached to a 120kg sandbag and drags the sandbag along. If the coefficient of friction between the sandbag and the runway is µk = 0.4, and if the plane’s brakes give an additional retarding force of magnitude 1400N, how far does the plane go before it comes to a stop?

A 1.0 kg object has a velocity of 5.0f m/s at t = 0. A constant resultant force of (3.0î + 4.0f ) N then acts on the object for 3.0 s. What is the magnitude of object's velocity at the end of the 3.0 s interval? A B D E 9.8m/s 17.7m/s 9.2 m/s 15.0 m/s 16.3 m/s Lütfen birini seçin: O A O B O C O D O E

A hockey puck with mass 0.163 kg is pushed across the ice with a constant force of 0.37 N. The coefficient of kinetic friction between the puck and the ice is 0.13. After a distance of 1.3 m, what is the puck's speed in m/s?

A 0.697 kg football is thrown upward with an initial speed of 49.7 m/s.  Neglecting wind resistance, what is the force on the ball when it reaches half its maximum height? Use g=9.8 m/s