A skier starts from rest at the top of a ski slope and skis downhill. Find the skier's speed after her elevation decreases by 10m, assuming no work is done by friction or air resistance.

A trolley car starts from rest at the top of a hill as shown in figure -3.9 and moves down the curved track. Determine its speed as it reaches the bottom. Assume that the work done by frictional forces is negligible.

A skier starts from the top of a hill with speed 5m//s and slides down the hill of vertical height 60 m as shown. Neglect friction. Find his speed at the bottom.

A skier leaves the top of a slope with an initial speed of 5.0 m/s. Her speed at the bottom of the slope is 13 m/s. What is the height of the slope ?

A skier starts from rest at point A and slides donw the hill without turning or breaking. The friction coefficient is mu When he stops at point B, his horizontal displacement is S. whalt is the height difference between points A and B? (The velocity of the skier is small so that the additional pressure on the snow due to the curvature can vbe neglected. Neglect also the friction of air and the dependence of mu on the velocity of the skier)

A skier starts from rest at point A and slides donw the hill without turning or breaking. The friction coefficient is mu When he stops at point B, his horizontal displacement is S. whalt is the height difference between points A and B? (The velocity of the skier is small so that the additional pressure on the snow due to the curvature can vbe neglected. Neglect also the friction of air and the dependence of mu on the velocity of the skier)

On a level road, a scooterist applies brakes to slow down from a speed of 10 m/s to 5 m/s. If the mass of the scooterist and the scooter be 150 kg, calculate the work done by the brakes. (Neglect air resistance and friction)

The bottom of a ske slope is 6,500 feet above sea level,the top of the slope is 11,000 feet above sea level, and the slope drops 5 feet vertically for every 11 feet traveled in the horizontal direction. From the top of the slope, Kayla skis down at an average speed of 30 miles per hour. Which of the following function gives the best estimate for the distance above sea level, d, Kayla is t seconds after she begins her ski run where 6,500ltdlt11,000 ?

A small blockofmass 'm' is released from rest at the top of a rough inclined plane as shown The coefficient of friction between the block and inclined plane is 'mu' Using work-energy theorem, find the speed of block as it passes the lowest point.

A small blockofmass 'm' is released from rest at the top of a rough inclined plane as shown The coefficient of friction between the block and inclined plane is 'mu' Using work-energy theorem, find the speed of block as it passes the lowest point.

A 25 kg crate starting from rest at the top slides down a plane that makes an angle of 30^(@) with the horizontal . Whe it reaches the bottom of the 10 m long slide , its velocity is 8 m/s . The work done by the fore of friction is closest to a value of :