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aalyn [17]
3 years ago
14

Why does a bowling ball move without acceleration when it rolls along a bowling alley?

Physics
1 answer:
dybincka [34]3 years ago
5 0
The bowling ball is a perfect sphere, therefore, the resistance of the ball with the ground is very small and can be neglected.
This means that there is no horizontal force (F = zero)

Based on Newton's laws:
Force = mass x acceleration
Since the force is zero, therefore, the acceleration must be equal to zero.
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A 900 kg car is traveling at 20 m/s along the road. What force must be applied to the car to stop it in a distance of 30 m2 Assu
serg [7]

Answer:

A. 6000 N

Explanation:

v²=u²+2as

0²=20²+2x30xa

-400=60a

a=-400/60

a =-6.667m/s²

f =ma

f = 900 x 6.667 = 6003N

F = 6000N

5 0
3 years ago
Milk with a density of 1020 kg/m3 is transported on a level road in a 9-m-long, 3-m-diameter cylindrical tanker. The tanker is c
jeka57 [31]

Solution :

Given data is :

Density of the milk in the tank, $\rho = 1020 \ kg/m^3$

Length of the tank, x = 9 m

Height of the tank, z = 3 m

Acceleration of the tank, $a_x = 2.5 \ m/s^2$

Therefore, the pressure difference between the two points is given by :

$P_2-P_1 = -\rho a_x x - \rho(g+a)z$

Since the tank is completely filled with milk, the vertical acceleration is $a_z = 0$

$P_2-P_1 = -\rho a_x x- \rho g z$

Therefore substituting, we get

$P_2-P_1=-(1020 \times 2.5 \times 7) - (1020 \times 9.81 \times 3)$

           $=-17850 - 30018.6$

           $=-47868.6 \ Pa$

           $=-47.868 \ kPa$

Therefore the maximum pressure difference in the tank is Δp = 47.87 kPa and is located at the bottom of the tank.

         

4 0
3 years ago
What is velocity change divided by time change?
Luda [366]
Acceleration: is the change in velocity divided by the time it takes for the change to occur. . Acceleration is the change in verity divided by the time it takes to make the change, Acceleration has direction.
5 0
4 years ago
Which of the following are properties of mechanical waves?
yuradex [85]

The properties of mechanical waves are : ( C and D )

  • The three categories of mechanical waves are transverse, longitudinal,surface waves ( C )
  • Waves transport energy,but not matter ( D )

<h3>What are mechanical waves ?</h3>

Mechanical waves are a category of waves which cannot transmit energy through a vacuum, i.e. they require a medium to transmit their energy from one end to another. An example of a mechanical wave is : sound wave. Mechanical waves are grouped into transverse, longitudinal and surface waves.

Hence we can conclude that The properties of mechanical waves are : The three categories of mechanical waves are transverse, longitudinal,surface waves and Waves transport energy,but not matter

Learn more about mechanical waves : brainly.com/question/26116832

#SPJ1

6 0
2 years ago
Can anyone please answer this cq..
ZanzabumX [31]
Hqisgshsjsvg udyfudueuduutuufududuydd
6 0
2 years ago
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