An object sits on a frictionless surface. A 16-N force is applied to the object, and it accelerates at 2.0 m/s2. What is the mass of the object?
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A car rounds a 20-m radius curve at 10m/s. The magnitude of…
A car rounds a 20-m radius curve at 10m/s. The magnitude of its acceleration is:
True or False: Electric forces between two charged objects i…
True or False: Electric forces between two charged objects increases with increasing quantity of charge on the objects.
If the net work done on an object is zero, then the object’s…
If the net work done on an object is zero, then the object’s kinetic energy
A driver, traveling at 22 m/s, slows down her 2000 kg car to…
A driver, traveling at 22 m/s, slows down her 2000 kg car to stop for a red light. What work is done by the friction force against the wheels?
Neglecting the effect of air resistance a stone dropped off a…
Neglecting the effect of air resistance a stone dropped off a 175-m high building lands on the ground in:
A 7.6 kg chair is pushed across a frictionless floor with a…
A 7.6 kg chair is pushed across a frictionless floor with a force of 42 N that is applied at an angle of 22° downward from the horizontal. What is the magnitude of the acceleration of the chair?
Two spacemen are floating together with zero speed in a grav…
Two spacemen are floating together with zero speed in a gravity-free region of space. The massof spaceman A is 120 kg and that of spaceman B is 90 kg. Spaceman A pushes B away from him with B attaining a final speed of 0.5m/s. The final recoil speed of A is:
A meter stick on a horizontal frictionless table top is pivo…
A meter stick on a horizontal frictionless table top is pivoted at the 80-cm mark. It is initially at rest. A horizontal force F1 is applied perpendicularly to the end of the stick at 0 cm, as shown. A second horizontal force F2 (not shown) is applied at the 100-cm end of the stick. If the stick does not rotate:
A bicycle wheel rotates uniformly through 2.0 revolutions in…
A bicycle wheel rotates uniformly through 2.0 revolutions in 4.0 s. What is the linear speed of a point 0.10 m from the center of the wheel?