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problem 1: You jog once around an oval track in 6.0 minutes at an average speed of 1.7 mIs.

a) Determine the distance travelled?
b) Determine the displacement?

problem 2: A car travels at an average velocity of 95 km/h for 1.25 h north and at an average velocity of 75 km/h south for the other 1.75 h.

a) Find out the average velocity of the car throughout the 3.00 h of travel.
b) Find out the average speed of the car throughout the 3.00 h of travel.

problem 3: A bungee cord is 11.0 m long. Determine the velocity of a bungee jumper just as the cord starts to stretch?

problem 4: If a stone is thrown vertically upward with a velocity of 9.0 m/s, what is its

a) Displacement after 1.5 s?
b) Velocity after 1.5 s?

problem 5: A stone is thrown vertically upward and it returns to the thrower 3.2 s later.

a) Determine the stones maximum displacement (that is, height)?
b) Determine the velocity of the stone when it is discharged by the thrower?

problem 6: A car is travelling north on a city street. It begins from rest at a stop light and accelerates uniformly at a rate of 1.3 rn/s2 till it reaches the speed limit of 14 mIs. The car will travel at this velocity for 3.0 minutes and will then decelerate at a uniform rate of 1.6 m/s2 till it comes to a stop at the next stop light. How far apart are the two lights?

problem 7: A student throws a ball vertically downward at a velocity of 8.0 mIs from the top of a 25 m building,

a) How long does it take the ball to reach the ground?
b) Determine the velocity of the ball as it hits the ground?

problem 8: A model rocket is launched vertically upward from the ground. After 4.3 s, its fuel is totally burned. Supposing uniform acceleration of 3.0 rn/s2 while the fuel is burning,

a) Determine the rocket’s velocity the instant the fuel is totally burned?

b) Determine the rocket’s maximum displacement (maximum height reached) throughout its motion? (Keep in mind it will continue to increase after the fuel is consumed.)

• Category:- Physics
• Reference No.:- M92820

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