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3. AN OBJECT STARTS FROM REST AND UNIFORMLY ACCELERATION AT A RATE OF 2m/sec2 FOR 5 SECOND.
A. WHAT IS THE DISPLACEMENT DURING THIS 5 SECOND TIME PERIOD?
B. WHAT IS THE OBJECT FINAL VELOSITY?
2. AN OBJECT IS THROWN WITH A SPEED OF 60M/SEC IN A DIRECTION 60 O ABOVE THE HORIZONTAL. FIND;
A. THE HEIGHT IT RISES
B. THE TOTAL TIME OF FLIGHT
C. THE HORIZONTAL RANGE.
1. A BODY FALLS FREELY FROM REST. FIND
A. THE DISTANCE IT FALLS IN 3 SECOND
B. THE SPEED AFTER FALLING 256 FEET.
C. THE TIME REQUIRED TO ATTAIN A SPEED OF 80FT/SEC.
D. THE TIME IT WILL TAKE TO FALL 900 FEET?
Starting from Rest, a block of mass m = 5.0kg slides down a frictionless ramp. The ramp has a vertical height of H= 1.0 meter and makes an angle of 30 degrees with the floor. After leaving the ramp, the block slides along the floor. But the floor is not frictionless. In fact, the floor'S coefficient of kinetic friction is 0.20.
A) What is the block's speed at point B? Solve this without any kinetic formulas
B.) How much work does the floor do on the block as the block slows down and eventually comes to rest?
C.) How far along the floor does the block slide before coming to rest?
D.) How would your answer to parts (b) and (c) change if the floor's coefficient or friction were =. 40 instead of =. 20? Just answer in qualitatively how things would be different.
A body moves with initial velocity of 30ms and accelerates uniformly until it attains a velocity of 80ms. It then continues at that velocity for same time and accelerates to rest
The total time taken for the journey is 40s and the total distance traveled is 2550m. If the time spent accelerating is 1/3 of travelling at constant velocity. Calculate the acceleration
two loudspeakers are 1.00m apart. a person stands 4.00m from one speaker. how far must this person be from the second speaker to detect destructive interference when the speakers emit an 115Hz sound? assume the temperature is 20^0
What must be the distance between point charge q1 = 26.0 micro C and point charge q2=47.0 micro C for the electrostatic force between them have a magnitude of 5.70 N?
A stretched wire (fixed at both ends) is connected to a vibrator with fixed frequency f. Under a tension, T, a standing wave pattern consisting of 5 loops is observed on the wire. What should be the new tension T’ in order to obtain one loop on the wire?
Explain the reason why the mean drift velocity of conductors are very slow yet light switches on immediately the switch is turned on.
The bottom of a 4.0-m-tall diving bell is at an unknown depth underwater. The pressure of the air inside the bell is 2.0 atm (it was 1 atm before the bell entered the water). The average density of ocean water is slightly greater than the density of fresh water, ρocean water = 1027 kg/m 3. How high is the water inside the bell and how deep is the bottom of the bell under the water?
