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Problems with solutions
| I.D |
Level |
Problem |
Problem Topic |
| 95 |
High school |
Find the vector A which when added to vector B = 270 m/s @ 50 degrees, results in the vector C = 140 m/s @ 10 degrees.
a) By graphical construction. Specify the scale used , and label each vector including it's direction angle. Show the centimeter length of each vector as measured with rule . . . continues
Click to Purchase Solution |
Work,Power & Energy |
| 172 |
High school |
The coefficient of kinetic friction between a suitcase and the floor is 0.240 .
(a) if the suitcase has a mass of 55.0 kg , how much works does it take to push the suitcase horizontally with constant speed a distance of 2.70 m across the floor ?
. . . continues
Click to Purchase Solution |
Force & Laws of Motion |
| 173 |
High school |
After a tornado , a 0.60 g straw was found embedded 2.9 cm into the trunk of a tree . If the average force exerted on the straw by the tree was 60 N , What was the speed of the straw when it hit the tree ? . . . continues
Click to Purchase Solution |
Force & Laws of Motion |
| 174 |
High school |
A child pulls a friend in a little red wagon with constant speed . If the child pulls with a force of 16 N for 14.3 m , and the handle of the wagon is inclined at an angle of 29 degree above the horizontal , how much work does the child do on the wagon ? . . . continues
Click to Purchase Solution |
Force & Laws of Motion |
| 97 |
High school |
The picture shown in "click here" consist of eight cars that are moving along horizontal roads at specified speeds. Also given are the masses of the cars. All of the cars are the same size and shape, but they are carrying loads with different masses . All of these cars are going to be stopped by plowing into identical barriers . All of the cars are . . . continues
Click to Purchase Solution |
Work,Power & Energy |
| 98 |
High school |
Various similar boxes are being pushed for 10 m across a floor by a net horizontal force as shown in "click here" . The masses of the boxes and the net horizontal force for each case are given in indicated figures .
Rank the change in kinetic energy for each box from the greatest change in kinetic energy to the least change in kinetic . . . continues
Click to Purchase Solution |
Work,Power & Energy |
| 99 |
High school |
The water slides ends at a height of 1.50 m above the pool . If the person starts from the rest at a point A and lands in the water at a point B which is the dis L = 2.64 m from the haze of the slide , what is the vertical drop h of the water slide ? (no friction) . . . continues
Click to Purchase Solution |
Work,Power & Energy |
| 100 |
High school |
Automobile air bag reduce what during a collision ?
a) speed of the automobile
b) the forces exerted up on the passenger
c) the kinetic energy transferred to the . . . continues
Click to Purchase Solution |
Work,Power & Energy |
| 101 |
High school |
A skier , of mass 60 kg , pushes off the top of the hill with an initial speed of 4.0 m/s . How fast will she be moving after dropping 10 m in elevation ? . . . continues
Click to Purchase Solution |
Work,Power & Energy |
| 102 |
High school |
Mathew pulls his little sister Sarah in a sled on an icy surface (assume no friction) , with a force of 60.0 N at an angle of 37.0 degrees upward from the horizontal . If he pulls her a distance of 12.0 m the work he does is ? . . . continues
Click to Purchase Solution |
Work,Power & Energy |
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