Physics Answers

Find the radius of a curve banked at an angle of 35O negotiated by a car at a velocity of 20.0 m/s.

A bike successfully made a turn around a circular path whose radius is 13.0 m. At what angle is the road banked if its velocity was 12.0 m/s/ 

The curve of a 70.0-m circular path is banked at 35O. At what velocity shall a 1000- kg car have for it to make the turn in this curve? 

At what angle shall a curve be raised in order for a 1500.0-kg vehicle to make a turn around a 100.0-m circular track at a velocity of 30.0 m/s? 

A 100-kg man walks around a 500.0-m circular path in constant speed. Find:

 i. The radius of the circular path

 ii. The period of his motion if he completes 6 rounds in 30 minutes 

iii. The frequency of his motion

 iv. His speed

 v. The force that pulls him inward the path 

SA12. Illustrate the path of a projectile launched at a velocity of 150.0 m/s at an angle of 50O with the horizontal and find, illustrate, and label the following in the same illustration you have. a. The viy of the projectile

 b. The vix of the projectile

 c. Its vy 2.0 seconds after it was launched

 d. Its vf based on letter c 

e. Its maximum height (𝐦𝐚𝐱 𝐝𝐲 ↑)

 f. The time it will reach a height of 3.0 m (𝒕 ↑) 

g. Its position/location 4.0 seconds of its flight (𝐝𝐲 ↑) 

h. Its range ( R ) 

SA13. A basketball player throws a desperation shot at the buzzer from the backcourt 1.0 second before the game ended with the score tied. If the ball was released at a velocity of 12.0 m/s at an angle of 38O and if the release was made at the same level as the basket from a distance of 14.2 m, did he score? Why?

The motor is used in lifting a 200 kg object at a constant speed of 3 cm/s. What power is being developed by the motor?

 A 50-gram block rests on an inclined plane 15^o with the horizontal. The coefficient of friction is 0.10. Find:  a) the acceleration of the block, b) the work done against friction 2 minutes after starting from rest, and c) its average power.

A wire of length 3.45 m and mass 13.70 g is under a tension of 1.25 N. A standing wave has formed which has seven nodes excluding the endpoints. Calculates the frequency of this wave?