An object is moving with constant non-zero acceleration in the +x direction. The position versus time graph of this object is
A) a horizontal straight line.
B) a vertical straight line.
C) a straight line making an angle with the time axis.
D) a parabolic curve.
D
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Isotopes of the same element have the same number of protons
Indicate whether the statement is true or false
If the length of a box is reduced by one-third and the width and height are doubled, by what factor has the volume changed?
A. 4/3 B. 2/3 C. 3/4 D. 3/2
Suppose we have determined the orbital period of a planet around its star. If we also know the mass of the star, then we can use the planet's orbital period and the star's mass to calculate
A) the planet's average orbital distance. B) mass of the planet. C) eccentricity of the planet's orbit. D) radius of the planet.
A wheel (radius = 0.20 m) starts from rest and rotates with a constant angular acceleration of 2.0 rad/s2 . At the instant when the angular velocity is equal to 1.2 rad/s, what is the magnitude of the total linear acceleration of a point on the rim of the wheel?
a. 0.40 m/s2 b. 0.29 m/s2 c. 0.69 m/s2 d. 0.49 m/s2 e. 0.35 m/s2