How is a frame of reference used to measure motion

A 331 N stoplight is hanging in equilibrium from cables as shown. The tension in the right cable is 550 N, and it makes an angle of 12 degrees with the horizontal.

If the speedometer on a car indicates a constant speed can you be sure the car is not acclerating

What is the mass of an object that requires a for of 30n to accelerate at a rate of 5m/sec

How much force is needed to accelerate a 1000-kg car at a rate of 3 m/s squared

It is possible to charge a balloon to several thousand volts using electrostatics, for example, by rubbing it on one's hair or on different types of clothing. Does this mean that the balloon is also storing several Joules of energy? Why or why not?

Why is it important for engineers to design bumper cars safely

What must her minimum speed be just as she leaves the top of the cliff so that she will miss the ledge at the bottom, which is 1.75 m wide and 9.00 m below the top of the cliff?

Which statement describes how light behaves when it strikes a translucent material? A. Light is scattered. B. Light is transmitted. C. Light is reflected. D. Light is absorbed.

A certain gas is present in a 15.0 l cylinder at 2.0 atm pressure. if the pressure is increased to 4.0 atm the volume of the gas decreases to 7.5 l.

Choose all the answers that apply. To qualify as a planet, a celestial object must: have an irregular shape revolve around the sun orbit in a clear area have enough gravity to have a spherical shape have a satellite