All categories

4 years ago

Mr. Smith is designing a race where velocity will be measured. Which course would allow velocity to accurately get a winner?

1 answer:

4 0

Velocity is Displacement / Time

In order for Velocity to Accurately get a winner, you should be able to determine the race by looking at How Far the competitors are from the starting point in the shortest amount of time

so the answer should be something like : a 5 mile course from the center of the town heading north to the outskirts of the town

You might be interested in

Sarah is hanging a 1.5 -kg picture on the wall. She holds it in place with a horizontal force while she checks to see if it is p

NNADVOKAT [17]

Answer:

24.5 N

Explanation:

Draw a free body diagram of the picture. There are four forces:

Weight force mg pulling down.

Friction force Nμ pushing up.

Normal force N pushing left.

Applied force F pushing right.

Sum of the forces in the y direction:

∑F = ma

Nμ − mg = 0

N = mg / μ

Sum of the forces in the x direction:

∑F = ma

F − N = 0

F = N

Substitute and solve:

F = mg / μ

F = (1.5 kg) (9.8 m/s²) / (0.6)

F = 24.5 N

4 0

3 years ago

The order of elements in the periodic table is based on

vladimir1956 [14]

A, the number of protons in the nucleus.
The atomic number tells us the amount of electrons and protons in an atom.

7 0

3 years ago

Identify the 4 components of an atom and what the charge is on each one ? Please help

luda_lava [24]

Answer:

Structure Of The Atom: Our current model of the atom can be broken down into three constituents parts – protons, neutron, and electrons. Each of these parts has an associated charge, with protons carrying a positive charge, electrons having a negative charge, and neutrons possessing no net charge.

6 0

3 years ago

Read 2 more answers

In a circus act, a uniform board (length 3.00 m, mass 25.0 kg ) is suspended from a bungie-type rope at one end, and the other e

tester [92]

Answer:

Force of Rope = 122.5 N

Force of Rope = 480.2N

Explanation:

given data

length = 3.00 m

mass = 25.0 kg

clown mass = 79.0 kg

angle = 30°

solution

we get here Force of Rope on with and without Clown that is

case (1) Without Clown

pivot would be on the concrete pillar so Force of Rope will be

Force of Rope × 3m = (25kg)×(9.8ms²)×(1.5m)

solve it and we get

Force of Rope = 122.5 N

and

case (2) With Clown

so here pivot is still on concrete pillar and clown is standing on the board middle and above the centre of mass so Force of Rope will be

Force of Rope × 3m = (25kg+73kg)×(9.8ms²)×(1.5m)

solve it and we get

Force of Rope = 480.2N

4 0

4 years ago

A sound wave takes 0.2 seconds to travel 306 meters.

chubhunter [2.5K]

Answer:

1530 m/s

Explanation:

Given that :

Speed = distance / time

Travel time take = 0.2 s

Distance covered = 306 metres

The speed of sound in the material :

Speed = distance / time = 306 m / 0.2

Speed = 1530 m/s

6 0

3 years ago