A 4.00 kg solid sphere of radius 5.00 cm starts from rest and rolls without slipping down a 30.0 degree incline. If the length of the incline is 50.0 cm, then the velocity of the center of mass of the solid sphere at the bottom of the incline is
A. 1,750 J.
B. 2,000 J.
C. 2,250 J.
D. 2,670 J.
E. 2,900 J.
A. 1,750 J.
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A 4.00 kg ball is moving at 4.0 m/s to the right and a 6.00 kg ball is moving at 3.00 m/s to the left. The total momentum of the system is
A. 16 kg m/s to the right. B. 2.0 kg m/s to the right. C. 2.0 kg m/s to the left. D. 18 kg m/s to the left. E. 34 kg m/s to the left.
Engineers are designing a curved section of a highway. If the radius of curvature of the curve is at what angle should the curve be banked so that a car traveling at 29.0 m/s will stay on the road without the aid of frictional forces?
A) 23.9° B) 16.7° C) 21.0° D) 26.1°
A miracle car with a 100% efficient engine burns fuel having a 40-megajoules-per-liter energy content. If air drag and overall frictional forces at highway speeds totals 1000 N, what distance per liter can be achieved on the highway?
A) 30 km B) 40 km C) 50 km D) more than 50 km E) need more information
The oldest Moon rocks are about ______________ years old
Fill in the blank(s) with correct word