Author: Anonymous

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A skier starts from rest and slides down a frictionless slope. The slope is 15 m long and makes a 25° angle with the horizontal. What is the skier’s speed at the bottom of the slope?

How would a spinning object’s kinetic energy change if its moment of inertia were 5 times larger but its angular speed were 5 time smaller?  

A 180 cm long bar has a cross-sectional area of 1.8 × 10-4 m2. A force of 2.2 × 104 N applied to each end increases the length of the bar by 1.2 mm.  This is an example of what kind of strain?

A truck with a translational speed of 15.0 m/s rounds a curve with a radius of 6.50 m. Calculate the angular speed (units: radians per second).    NOTE: Watch correct use of rounding and significant figures Enter numerical answer in proper decimal format, not scientific notation Do not enter units with the answer  

A 1.25 × 103 g object is moving at 11.5 m/s. Calculate the momentum of the object (units: kg⋅m/s)?   NOTE: Watch correct use of rounding and significant figures Enter numerical answer in proper decimal format, not scientific notation Do not enter units with the answer  

Dave accelerates a box across a smooth friction-less horizontal surface over a distance of 15.0 m with a constant 25.0 N force angled at 38.0° above the horizontal. How much work (units: J) does Dave do on the box? NOTE: Watch correct use of rounding and significant figures Enter numerical answer in proper decimal format, not scientific notation Do not enter units with the answer  

Dave accelerates a box across a smooth friction-less horizontal surface over a distance of 15.0 m with a constant 38.0 N force angled at 25.0° above the horizontal. How much work (units: J) does Dave do on the box? NOTE: Watch correct use of rounding and significant figures Enter numerical answer in proper decimal format, not scientific notation Do not enter units with the answer  

If   find dy/dx   Click ‘True’ when finished