Eric has a battery operated toy train consisting of 5 train cars. Each car has a mass of 13 g except for the 1st car which has a mass of 8 g. Find the force needed to accelerate the train at 3.0m/s2. **remember, you must convert your answer (grams to kilograms). * 20 N
.2 N
.02 N
none of these

Explain what makes a passenger in a turning car slide toward the door. critical thinking

Two balls, each with a mass of 0.5 kg, collide on a pool table. is the law of conservation of momentum satisfied in the collision? explain why or why not

Along wire carrying a 4.2 a current perpendicular to the xy-plane intersects the x-axis at x=−1.7cm. a second, parallel wire carrying a 3.0 a current intersects the x-axis at x=+1.7cm. part a at what point on the x-axis is the magnetic field zero if the two currents are in the same direction? express your answer to two significant figures and include the appropriate units.