Charlotte is investigating Newton's second law of motion. She hypothesizes that if she applies a constant force of 10 N, then increasing the mass of the toy car will result in an increased acceleration. The results of her
experiment are in the table.
THE EFFECT OF THE MASS OF A TOY CAR ON ITS ACCELERATION
Force Applied (N) Mass of Toy Car (9) Acceleration of Toy Car
(m/s2)
10 N
1.0 m/s2
10 N
200 g
0.5 m/s2
10 N
0.3 m/s2
100 g
300 g
How should Charlotte phrase her conclusion?

Next a skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 15 with the horizontal. the rope moves parallel to the slope with a constant speed of 0.69 m/s. the force of the rope does 800 3 of work on the skier as the skier moves a distance of 8.4 m up the incline. (a) if the rope moved with a constant speed of 2.2 m/s how much work would the force of the rope do on the skier as the skler moved a distance of 8.4 m up the incline? at what rate is the force of the rope doing work on the skier when the rope moves with a speed of (b) 0.69 m/s and (c) 2.2 m/s?

Aspecimen of oil having an initial volume of 580cm^3 is subjected to a pressure increase of 4.0 mpa, and the volume is found to decrease by 0.40 cm^3. (a) what is the bulk modulus of the material? (b) what is the compressibility of the material?

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.