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During take-off, an aircraft accelerates at 3.4 m/s2. The total mass of the aircraft is 8.0 × 103 kg. Calculate:
a) the net force acting on the aircraft during the acceleration.
b) the speed of the aircraft after 5.0 seconds of acceleration.
A block of wood of mass m = 250 g is being pulled along a surface by a force F = 20 N. The force of friction between the block
and the surface has a magnitude of 15 N as
shown. Calculate:
a) the acceleration of the block.
b) the distance moved, starting from rest, in 5.0 s.
Two objects are separated by 2500m. The first object has a mass of 1.5x105 kg and the second object has a mass of 8.5x102 kg. What is the gravitational attraction between them?
3) The displacement–time graph for an oscillating pendulum is shown below. If the frequency of the pendulum is 60 Hz, what is the time interval between points a & b? (1 Dgree)
Solve for Their Momentum in SI Unit
1.) Pacific Plate moves 2in annually and has a mass on 4.34x1022 kg approximately
2.) The Rate of movement of North American Plate is 1cmper year and has a mass of 3.18x1022 kg approximately
3.) The Eurasian plate is moving about 3cmper year. It has a mass of 2.85x1022 kg approximately
A fixed mass of gas is heated inside a rigid container. As its temperature changes from T1
to T2 the pressure increases from 1x105 Pa to 2x105 Pa. Which row in the table shows
possible values for T1 and T2?
T1 T2
A 27°C 327°C
B 30°C 60°C
C 80°C 40°C
D 303 K 333 K
E 600 K 300 K
The following data were collected during a short race between two friends. Velocity (m/s) 0 0.5 1 1.5 2 2 4 6 2 0 Time (s) 0 2 4 6 8 10 12 14 16 18 a) Describe the different sections of the graph. b) Determine the acceleration over the first eight seconds. c) Determine the maximum acceleration. d) Using the graph calculate the displacement: i) over the first eight seconds ii) the total race. e) Find the maximum velocity reached by the runner
6. A boat travels 12.0 m while it reduces its velocity from 9.5 m/s to 5.5 m/s. What is the magnitude of the boat’s acceleration while it travels the 12.0 m?
7. A 10-kg crate is pushed across a frictionless surface with a force of 30 N. What is its acceleration?
8. John had an acceleration of 0.35m/s^2. He traveled for 91 seconds with this acceleration. What would John’s final velocity be if he was initially moving at 2.0 m/s?
9.A car’s velocity is given by v (t) = 5 - 10t. Find the average acceleration between t = 2 and t = 5?
10. Given the position s(t)= - 2t^3 + 13t^2, where s is in meters and t is in seconds. Find the average velocity from t = 4 to t = 6.
1. A cat is moving at 18 m/s when it accelerates at 4 m/s^2 for 2 seconds. What is his new velocity?
2.A car slows from 22 m/s to 3.0 m/s at a constant rate of 2.1 m/s^2. How many seconds are required before the car is traveling 3.0 m/s?
3. A race car is traveling at +76 m/s when it slows down at -9 m/s^2 for 4 seconds. What is his new velocity?
4. A speedboat increases in speed uniformly from 20 m/s to 30 m/s in a distance of 200 m. What is the acceleration of the speedboat?
5. Julie is walking around a track at a 2 m/s for some exercise. She then decides to start jogging so she accelerates at a rate of 0.5 m/s^2 for 3 seconds. How far did Julie travel from the time she started to accelerate to the end of the 3 seconds?
Draw your own theoretical potential energy diagram that have the
following (5 points):
• Total mechanical energy
• Maximum displacement / position (at least one)
• Turning point (at least one)
• Equilibrium points (at least two)
Be sure to label the x and y axes of your graph. The line of the graph can
assume any shape, as long as the rules for drawing the potential energy
diagram are followed.
