A car is driven 1200 m north at 20.0 m/s and then driven 1600 m east at 25.0 m/s. What are the magnitude and direction of the displacement for this trip?

a. 1400 m, northeast
b. 2000 m, 36.9° north of east
c. 2000 m, 53.1° north of east
d. 2800 m, 36.9° east of north
e. 2800 m, 53.1° east of north


b

Physics & Space Science

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Kepler's first law states that Earth's orbit around the Sun takes the shape of a(n) ______________

Fill in the blank(s) with the appropriate word(s)

Physics & Space Science

A 10-cm focal length converging lens is used to magnify small newspaper print 2.0 mm high. Calculate the height of the image (in mm) for the maximum magnification for a normal eye.

A. 3.5 B. 7.0 C. 9.2 D. 12 E. 2.5

Physics & Space Science

A baseball outfielder throws a baseball of mass 0.15 kg at a speed of 30 m/s and initial angle of 30°. What is the kinetic energy of the baseball at the highest point of the trajectory? Ignore air friction

a. zero c. 92 J b. 51 J d. 120 J

Physics & Space Science

Typical asteroids are irregularly shaped. Why is Ceres not so shaped?

A. Ceres is near the Sun; the Sun's heat melted Ceres, and it solidified into a sphere. B. Ceres is relatively massive; its gravitational force is strong enough to crush its material into a sphere. C. Ceres is near Earth; it was shaped into a sphere by Earth's gravitational force. D. Ceres is shaped like all the other asteroids.

Physics & Space Science