Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Physics Expert

Solve problems using the equations of force and motion in one dimension and two dimensions.

1. A student undergoes a first displacement of 3.50 meters at an angle of 30degrees NORTH of EAST. The student undergoes a second displacement of 5meters at an angle of 45 degrees SOUTH of EAST. The x component, (EAST - WEST) of the total displacement is?

1. 6.57 meters EAST
2. 6.57 meters WEST
3. 1.79 meters EAST
4. 1.79 meters WEST
5. 6.80 meters EAST

2. Two forces are applied to an object. The first force is 2.50 N at an angle of 45 degrees NORTH of EAST. The second force is 5 N at an angle of 30 degrees WEST of NORTH. The magnitude of the vector sum is?

1. 9.77 N
2. 6.14 N
3. 4.33 N
4. 1.76 N
5. 0.73 N

3. A rocket is launched from the origin with an acceleration of 20 m/s2 at an angle of 30 above the horizontal. The launch acceleration lasts for 2 seconds at which time the fuel is exhausted. The rocket then falls with an acceleration of 9.8 m/s2 downward. What is the maximum velocity in upward direction?

1. 20 m/s
2. 25 m/s
3. 30 m/s
4. 35 m/s
5. 40 m/s

4. A projectile is projected from the origin (yo= 0) with a velocity of 20 m/s at the angle of 30 degrees above the horizontal. The projectile lands on a roof that is 4 m height. What is the time when the projectile hits the roof?

1. 1.11 s
2. 1.27 s
3. 1.33 s
4. 1.49 s
5. 1.67 s

5. A projectile is projected from the origin (yo= 0) with a velocity of 20 m/s at an angle of 30 degrees above the horizontal. The projectile lands on a roof that is 4 m height. What is the distance along the horizontal axis when the projectile hits the roof?

1. 25.9 m
2. 22.3 m
3. 19.4 m
4. 17.5 m
5. 15.0 m

6. A penny is dropped from the top of the Empire State building (369 m above ground). With what velocity does it strike the ground? Ignore air resistance.

1. 86 m/s up
2. 60 m/s up
3. 70 m/s up
4. 85 m/s down
5. 60 m/s down

7. A projectile is projected from the origin (yo= 0) with a velocity of 45 m/s at an angle of 30 degrees above the horizontal. What is the time it takes for the projectile to hit the ground?

1. 2.54 s
2. 3.02 s
3. 4.59 s
4. 5.31 s
5. 6.04 s

8. Vector A has magnitude 4.0 units; vector B has magnitude 6 units. The angle between A and B is 60.0°. What are the magnitude of A + B?

1. 8.7 units
2. 8.9 units
3. 6.9 units
4. 7.2 units
5. 7.8 units

9. An object is moving in a circular path with a radius of 4.0 m. If the object moves through an angle of 45 degrees, then an angle in radians is approximately?

1. 0.25 radians
2. 0.53 radians
3. 0.79 radians
4. 1.02 radians
5. 1.44 radians

10. A CD has a diameter of 12.0 cm. If the CD is rotating at a constant angular speed of 200 revolutions per minute, then the tangential velocity of a point on the circumference is?
1. 2.11 m/s
2. 1.26 m/s
3. 2.78 m/s
4. .23 m/s
5. 3.64 m/s

Physics, Academics

  • Category:- Physics
  • Reference No.:- M917215

Have any Question? 


Related Questions in Physics

Fill in the details in the proof of lubys main theorem that

Fill in the details in the proof of Luby's main theorem, that receiving K' = K +2 ln(S/δ)S checks ensures that all the source packets can be recovered with probability at least 1 - δ.

A rock of 130 kg is found at the top of a mountain that is

A rock of 130 kg is found at the top of a mountain that is 1140-m high. Find the potential energy with respect to the bottom of the mountain (g = 9.8 m/s 2 ).

In an electrical outlet the voltage v in volts is given as

In an electrical outlet, the voltage, V , in volts, is given as a function of time, t, in seconds, by the formula (a) What does V0 represent in terms of voltage? (b) What is the period of this function? (c) How many osci ...

A solenoid of inductance 50mh and resistance 10 ohms is

A solenoid of inductance 50mH and resistance 10 ohms is connected to a battery 6v.FInd the time elapsed before the current acquires half of its steady state value.

A closed cylindrical can of fixed volume v has radius ra

A closed cylindrical can of fixed volume V has radius r. (a) Find the surface area, S, as a function of r. (b) What happens to the value of S as r → ∞? (c) Sketch a graph of S against r, if V = 10 cm 3 .

In 2011 the greenland ice sheet was melting at a rate

In 2011, the Greenland Ice Sheet was melting at a rate between 82 and 224 cubic km per year. (a) What derivative does this tell us about? Define the function and give units for each variable. (b) What numerical statement ...

A flat steel plate is 20 m length and 20 m width initially

A flat steel plate is 2.0 m length and 2.0 m width initially contains a very thin coating of lubricating oil used in a manufacturing process. An engineer is considering the feasibility of using hot forced air convection ...

The income that a company receives from selling an item is

The income that a company receives from selling an item is called the revenue. Production decisions are based, in part, on how revenue changes if the quantity sold changes; that is, on the rate of change of revenue with ...

Diffraction in a single-slit diffraction pattern the

Diffraction. In a single-slit diffraction pattern, the forth-order minimum is 1.5° from the center. What's the slit width if the wavelength is 450 nm? and 650 nm?

A pin is thrown tumbling in the air what is the probability

A pin is thrown tumbling in the air. What is the probability distribution of the angle θ 1 between the pin and the vertical at a moment while it is in the air? The tumbling pin is photographed. What is the probability di ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen