When a net force on a moving object increases, the object will
a. maintain the same velocity.
b. always show an increase in speed.
c. exhibit a change in speed and/or direction.
d. maintain a constant acceleration.
c
You might also like to view...
A rectangular plate in plane stress is subjected to normal stresses ?x 5 35 MPa, ?y 5 26 MPa, and shear stress ?xy 5 14 MPa. The ratio of the magnitudes of the principal stresses (?1/?2) is approximately:
(A) 0.8
(B) 1.5
(C) 2.1
(D) 2.9
Light spreads out when it passes through a narrow slit because of
a. interference. b. diffraction. c. specular reflection. d. diffuse reflection. e. polarization.
Boris completely filled a 2.5-liter container with gasoline at a temperature of 20°C. He then left the gasoline in a storage locker where the temperature reached 38°C. The lid of the container was not screwed on tightly, so gasoline was able to leak out and evaporate. Boris uses the gas in his scooter, which gets 35 km/liter. How far could Boris have ridden his scooter using the lost gas?
(?gasoline = 9.6 × 10^–4/°C) a. 4.7 m b. 43 m c. 1.5 km d. 180 km
A Thermos bottle has double glass walls with silver coating on the glass surfaces that face each other. The silver coating reduces energy transfer by
A) conduction. B) convection. C) radiation. D) all the above E) none of the above