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3 years ago

The first step of making the scientific method involves making ----------

1 answer:

7 0

Answer: Objective Observations

Explanation: The first step in the Scientific Method is to make objective observations. These observations are based on specific events that have already happened and can be verified by others as true or false

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Cam Newton can sprint 40 meters in 5.79 seconds! How fast can he run?<br> Show your work

Setler79 [48]

Speed=Distance/Time

Distance=40m,time=5.79seconds

S=40/5.79

=6.908m/s

6 0

3 years ago

Read 2 more answers

Pls help me i have to submit this due tomorrow :'D

aniked [119]

$\textsf {a) As there is no change in the initial and final positions, the displacement is}\\\textsf {equal to 0.}$

b) Finding total distance :

Distance travelled from 0 s to 5 s :

1/2 x 5 x 30 = 75 m

Distance travelled from 5 s to 10 s :

5 x 30 = 150 m

Distance travelled from 10 s to 15 s :

150 + 1/2 x 5 x 5
150 + 12.5 = 162.5 m

Distance travelled from 15 s to 20 s :

36 x 5 + 1/2 x 5 x 4
180 + 10 = 190 m

Distance travelled from 20 s to 25 s :

45 x 5 + 1/2 x 5 x 5
225 + 12.5 = 237.5 m

Distance travelled from 25 s to 30 s :

40 x 5 + 1/2 x 10 x 5
200 + 25 = 225 m

Distance travelled from 30 s to 35 s :

20 x 5 + 1/2 x 20 x 5
100 + 50 = 150 m

Distance travelled from 35 s to 40 s :

1/2 x 20 x 5
50 m

Total = 75 + 150 + 162.5 + 190 + 237.5 + 225 + 150 + 50

Total = 1240 m

c) velocity at t = 15 s

36/15
12/5
2.4 m/s

d) average velocity

0 m/s (as displacement is equal to 0)

e) average speed

1240/40
31 m/s

f) Part d uses displacement whereas part e uses distance

3 0

2 years ago

What is the weight, in pounds, of a 185-kg object on jupiter? express the weight numerically in pounds?

strojnjashka [21]

Befroe showing a numercial answer, It is necessary to clarify that pounds is not a unit of weight. Pounds is a unit of mass.

Mass is a property of matter which indicates the amount of matter (atoms of certain kind) that the object has. The mass of an object does not change whenever the object changes of environment. It is the same in water, on the air, on Jupiter, the Earth, Venus, the Moon. Any where.

On the other hand, weight is the product of mass times the acceleration of gravity. Therefore, weight is different from mass and it changes depending on the place.

To find the mass in pounds of a 185 kg object, you have to make a conversion of units.

The conversion factor is 1 kg = 2.2046 pounds ⇒ 1 = 2.2046 pounds / kg.

Therefore, 185 kg = 185 kg × 2.2046 pounds / kg = 407.851 pounds = 407.851 lb ← this is the mass in pounds.

To find the weight you had to search for the gravitational acceleration in Jupiter and calcuate it with the formula weight = mass × acceleration of gravity.

You find the value for acceleration of gravity in Jupiter in internet as 24.79 m/s².

Weight = 185 kg × 24.79 /s² = 4,586 kg × m/ s² = 4,586 N.

There is a force unit in disuse called kiloponds. One kilopond equals 9.8 N. Hence, you can convert the weight 4,586 N to kiloponds in this way:

4,586 N × 1 kilopond / 9.8 N ≈ 468 kiloponds or 468,000 ponds ← weight

3 0

3 years ago

A table tennis ball with a mass of 0.003 kg and a soccer ball with a mass of 0.43 kg or both Serta name motion at 16 M/S calcula

poizon [28]

Let us first know the given: Tennis ball has a mass of 0.003 kg, Soccer ball has a mass of 0.43 kg. Having the same velocity at 16 m/s. First the equation for momentum is P=MV P=Momentum M=Mass V=Velocity. Now let us have the solution for the momentum of tennis ball. Pt=0.003 x 16 m/s= ( kg-m/s ) I use the subscript "t" for tennis. Momentum of Soccer ball Ps= 0.43 x 13m/s = ( km-m/s). If we going to compare the momentum of both balls, the heavier object will surely have a greater momentum because it has a larger mass, unless otherwise the tennis ball with a lesser mass will have a greater velocity to be equal or greater than the momentum of a soccer ball.

8 0

4 years ago

Read 2 more answers

A dentist’s drill starts from rest. After 4.28 s of constant angular acceleration it turns at a rate of 28940 rev/min. Find the

mylen [45]

Answer:

Angular acceleration, is $708.07\ rad/s^2$