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4 years ago

15

Which objects will likely have the smallest gravitational force between them?

1 answer:

lora16 [44]4 years ago

8 0

I’d say two soccer balls that are touching each other, I hope that helps!

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At the end of a race a runner decelerates from a velocity of 11.00 m/s at a rate of 0.300 m/s2. (a) how far does she travel in t

inessss [21]

given that initial velocity is

$v_i = 11 m/s$

deceleration is given as

$a = -0.3 m/s^2$

now we have to find the distance covered in 16 s

$d = v_i * t + \frac{1}{2} at^2$

$d = 11*16 - \frac{1}{2}*0.3*16^2$

$d = 137.6 m$

so it will cover 137.6 m distance

part b)

in order to find the final speed

$v_f = v_i + at$

$v_f = 11 - 0.3*16$

$v_f = 6.2 m/s$

so its speed will be 6.2 m/s

8 0

3 years ago

A pitcher is in 85° of abduction, holding a 1.4 N baseball at point C, 65 cm from the joint axis at point O • The center of grav

erastovalidia [21]

I attached a Diagram for this problem.

We star considering the system is in equlibrium, so

Fm makes $90-(\theta+5)$ with vertical

Fm makes 70 with vertical

Applying summatory in X we have,

$\sum F_x = 0$

$W+1.4-Fm cos(70)$

We know that W is equal to

$W= 0.06*100N = 6N$

Substituting,

$Fm cos (70) = W+1.4N$

$Fm cos (70) = 6N + 1.4N$

$Fm = \frac{7.4}{cos(70)}$

$Fm = 21.636N$

<em>For the second part we know that the reaction force Fj on deltoid Muscle is equal to Fm, We can assume also that</em> $\beta = \theta$

3 0

3 years ago

The sun is made up mostly of

qaws [65]

Answer:

the first one, gas

Explanation:

if its not what you looking for my b

3 0

3 years ago

A person weighing 50 newtons climbs a 2-meter ladder. How many joules of work is done? joules.

Mariulka [41]

50N x 2m =100J
Work= force x distance

7 0

3 years ago

A car has a 12-v battery. if we hook it up to a 36 ohm resistor, what current will flow?

ikadub [295]

Current = voltage/resistance
Current
= 12/36
= 1/3 A

I think...

8 0

3 years ago