Starting from rest, a ball of mass 4 kg experiences a constant force of 24 N for 10 s. What is the final kinetic energy (in J) of the ball after 10 s?
A package of mass 50 kg is dropped from a helicopter and experiences a drag force of 120 N due to air resistance. Find the resultant force and use it to calculate the acceleration of the package during the fall. Take the acceleration due to gravity as g = 9.81 m s-2 and give your answer in m s-2 to 1 decimal place. Answer: Answer m s-2
An airliner flying at 600 mph hits a 480 g duck that is 1 ft long. Estimate what average force the airliner experiences from this collision. 1 mi = 1609 m, 1 m = 3.28 ft, so the collision occurs while the airliner travels 1 ft. (Since you only know the mass of the duck, you must isolate it and find the force on it. Then use the 3rd law to relate that force to that experienced by the airliner....
Starting from rest, a ball of mass 3 kg experiences a constant force of 6 N for 10 s. What is the final kinetic energy (in J) of the ball after 10 s?
4. Calculate the centripetal force a 2kg mass experiences as it spins at the constant tangential speed of 5m/s along a circular path of radius r-2m. oscillation) to the 5. What are the spring force and its direction at a distance of 0.35m (while in left of the equilibrium position if k=32 kg/s??
1. I drag a mass m = 21 kg in a straight line, along a horizontal surface, a distance D=23 m . I drag it at constant speed v = 0.90 m.s^−1 in a straight line using a horizontal force. The coefficients of friction are μs = 1.2 and μk = 1.1. How much work do I do? W = _____ J . ( Retain accurate values until the final calculation, but remember significant figures. ) 2. A rubber band has mass m...
Consider a Porsche 911 sports car with a mass of 1900 kg. The air drag force at highway speeds can be approximately calculated as: F_drag = 1/2 C p Av^2 where p = 1.2 kg/m^3 is the density of air, A is the front area of the car, C is the drag coefficient and v is the velocity. For the Porsche 911, we can take A - 2.3 m^2 and C = 0.28. What is the power necessary to overcome...
Problem III A small airplane has a total mass of 1800 kg and a wing area of 42 m2. While cruising at arn altitude of 4000 m at a constant speed of 280 km/h this airplane generate 190 kW of power. At this altitude he air density ρ-0.82 kg/m3 a) Determine the thrust developed by this airplane b) Determine the lift and drag coefficients of this airplane
26) __ 26) A jet plane flying 600 m/s experiences an acceleration of 4.0 g when pulling out of the circular section of a dive. What is the radius of curvature of this section of the dive? A) 5.8 km B) 9.2 km C) 1.2 km D) 0.64 km E) 7.0 km 27) _ 27) The figure shows an acceleration-versus-force graph for three objects pulled by rubber bands. The mass of object 2 is 18 kg. What are the masses...