4 years ago

How far will a rubber ball fall on 20 seconds?

Physics

1 answer:

Shtirlitz [24]4 years ago

7 0

Given that:

time (t) = 20 s ,

S = ?

We know that S = ut + 1/2 at² meters

since free fall, a = g = 9.81 m/s² ; u =0 ;

S = 0 + 1/2 × 9.81 × 20²

You might be interested in

A 1 in diameter solid round bar has a groove 0.1 in deep with a 0.1 in radius machined into it. The bar is made of AISI 1040 CD

Maru [420]

The answer & explanation for this question is given in the attachment below.

3 0

4 years ago

.) List the molecules of elements in the sample of air. Give the

Ksivusya [100]

Answer:

Explanation: N2 Nitrogen, O2 Oxygen, Ar does not form molecules

8 0

3 years ago

A 523.2-W space heater is designed for operation in Germany, where household electrical outlets supply 230 V (rms) service. What

photoshop1234 [79]

Answer:

power = 142.4 W

Explanation:

power of heater in Germany (P₁) = 523.2 W

power of heater in America (P₂) = ?

outlet voltage in Germany (V₁) = 230 V

outlet voltage in America (V₂) = 120 V

While in Germany, power = $\frac{V₁^{2}}{R}$

523.2 = $\frac{230^{2}}{R}$

R = 101.1

While in America, also power = $\frac{V₂^{2}}{R}$

using the value of R gotten above

power = $\frac{120^{2}}{101.1}$

power = 142.4 W

6 0

3 years ago

4. A truck with a mass of 6,500 Kg can exert a force of 29,250 N when stopping. What is the deceleration

Vitek1552 [10]

Deceleration = 29250 / 6500 = 4.5 m/s^2

7 0

4 years ago

A 3.7-kg object is acted on by two forces. One of the forces is 11 N acting toward the

ololo11 [35]

Answer:

7.3 newtons to the west

Explanation:

3.7kg × 11a - 3.7kg × ? = 3.7n

4 0

3 years ago