Physics, 26.10.2020 05:10 elbehairy64

1-D Kinematics EXTRA CREDIT Please show your work as well as the answers. Make sure your answers have units and also a direction if it is a vector. Each correct question is 3 bonus points up to a maximum of 100 on the quiz.
For questions 1 and 2: A cart rolls 2 m to the right then rolls back 1 m to the left.
What is the total distance rolled by the cart?
The cart rolled 3 meters
What is the displacement of the cart from the initial to the final positions?

For questions 3 and 4: A child observes a caterpillar walking on a window sill. The caterpillar walks 18 cm to the left, then 6 cm to the right, then 10 cm to the left.
What is the total distance walked by the caterpillar?
34 cm
What is the displacement of the caterpillar?
The caterpillar’s displacement is 22 cm (left)
For questions 5 and 6: A ball is thrown upward from an initial height of 1.5 m. The ball reaches a height of 5 m then falls to the ground.
What is the total distance traveled by the ball?
Since the initial height must be a person standing 1.5 meters that means the actual amount traveled is only 3.5 meters in the air if we are not counting the 1.5 meters from the ground.
Displacement = 3.5 m
What is the displacement of the ball?
The displacement is 1.5m (west) because the ball started above the ground by 1.5m it made it so the displacement wouldn't be zero
A car travels a distance of 100 km in 2 hours. What is the average speed of the car (km/h)?
50 km/h
speed= distance/time

An NFL wide receiver prospect runs 40 m in 4.5 seconds. What is the average speed of the wide receiver (m/s)?

The average human walks at a speed of 5 km per hour. If your PE teacher asks you to walk for 30 minutes in gym class, how far would you walk (km)?

The posted speed limit on the road heading from your house to school is 45 mi/h, which is about 20 m/s. If you live 8 km (8,000 m) from school, how long will it take you to get to school if there is no traffic? Convert your answer to minutes.

For questions 11 and 12: A ladybug walks 10 cm forward then 5 cm backward in 20 seconds.

What is the average speed of the ladybug?

What is the average velocity of the ladybug?

A sports car accelerates from rest to 26.8 m/s (roughly 60 mi/h) in 5.1 seconds. What is the acceleration of the car?

One minute after takeoff, a rocket carrying the space shuttle into outer space reaches a speed of 447 m/s. What was the average acceleration of the rocket during that initial minute?

Classify the following measurements as vector or scalar quantities:

2.35 m, up
4.2 s
6.8 cm2
7.3 km/s, 30° N of E

Answers: 1

Show answers

Another question on Physics

Physics, 22.06.2019 01:00

Avehicle has an oil leak that is causing the entire oil pan to be wet, but inspection reveals no exact source after cleaning off the oil residue. technician a says to install a fluorescent dye in the crankcase and operate the engine, then re-inspect for leaks with a special light (black light). technician b says the oil leak may be coming from a source at the top of the engine, such as a valve cover gasket. who is correct?

Answers: 1

Answer

Physics, 22.06.2019 03:00

Which law represents the thermodynamic statement of the conservation of energy of a system? a. the fourth law b. the first law c. the second law d. the third law

Answers: 2

Answer

Physics, 22.06.2019 05:50

Acylinder with a movable piston contains 11.7 moles of a monatomic ideal gas at a pressure of 1.32×10^5 pa. the gas is initially at a temperature of 300 k. an electric heater adds 43200 j of energy into the gas while the piston moves in such a way that the pressure remains constant. cp=20.79 j k^−1 mol^−1 for a monatomic ideal gas, and that the number of gas molecules is equal to avogadro's number (6.022×10^23) times the number of moles of the gas. (a) what is the temperature of the gas after the energy is added? (b) what is the change in volume of the gas? (c) how much work is done by the gas during this process?

Answers: 3

Answer

Physics, 22.06.2019 09:30

(**i would really appreciate if this was answered soon** ) which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

Answers: 3

Answer

You know the right answer?

1-D Kinematics EXTRA CREDIT Please show your work as well as the answers. Make sure your answers ha...

Questions