1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Lera25 [3.4K]
3 years ago
6

A boy is exerting a force of 70 N at a 50-degree angle on a lawn mower. He is accelerating at 1.8 m/s2. Round the answers to the

nearest whole number.
What is the mass of the lawn mower?

What is the normal force exerted on the lawn mower?
Physics
2 answers:
kumpel [21]3 years ago
5 0

The mass is 25kg and the normal force is 299N

Crazy boy [7]3 years ago
3 0
The mass of the lawn mower can be calculated from the expression force is equal to the product of mass and acceleration. We do as follows:

F = ma
70 = m(1.8)
m = 38.89 kg

The normal force is the upward force perpendicular with the object. For this case it is equal with Wcos(50). We calculate as follows:

Fn = Wcos50 = 38.89(9.81)(cos50) = 245.23 N
You might be interested in
if you have 34 pounds of meat at 200F and you immerse it in 15 liters of water at 25C what is the final temp of the water? ( spe
hram777 [196]

Answer:

The specific heat capacity is the heat or energy required to change one unit mass of a substance of a constant volume by 1 °C. The formula is Cv = Q / (ΔT ⨉ m)

5 0
3 years ago
A 438kg car is accelerating east at 2.55m/s^2. What is the total force acting east on the car
lisabon 2012 [21]

Answer:

<h2>1116.9 N</h2>

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 438 × 2.55

We have the final answer as

<h3>1116.9 N</h3>

Hope this helps you

5 0
3 years ago
Questions 15 out of 20
Olin [163]

Answer:

D

Explanation:

7 0
3 years ago
A 97.6-kg baseball player slides into second base. The coefficient of kinetic friction between the player and the ground is μk =
Mila [183]

Answer:

v=6.65m/sec

Explanation:

From the Question we are told that:

Mass m=97.6

Coefficient of kinetic friction  \mu k=0.555

Generally the equation for Frictional force is mathematically given by

 F=\mu mg

 F=0.555*97.6*9.8

 F=531.388N

Generally the  Newton's equation for Acceleration due to Friction force is mathematically given by

 a_f=-\mu g

 a_f=-0.555 *9.81

 a_f=-54455m/sec^2

Therefore

 v=u-at

 v=0+5.45*1.22

 v=6.65m/sec

4 0
3 years ago
Ninas measurements shown in the table here BEST represent a wave with
Finger [1]
They best represent a wave with zero energy and zero amplitude.

There are no measurements shown in a table that accompanies
this question having any amplitude or energy greater than zero.
3 0
3 years ago
Read 2 more answers
Other questions:
  • Based on the information presented in the graph, what is the velocity of the object?
    11·1 answer
  • What is water vapour coming from the soil called
    14·1 answer
  • Please Help!!!
    11·2 answers
  • 2. What happens when multiple forces act on an object? (Points : 1)
    5·2 answers
  • Every sample of a pure substance has exactly the same composition and the same properties. true or false
    12·1 answer
  • Behavioral Adaptations: Behavior that animals begin life with that helps them meet their needs is called ________.
    14·2 answers
  • V
    5·1 answer
  • What force must be applied to the end of a rod along the x-axis of length 2.25 m in order to produce a torque on the rod about t
    8·1 answer
  • Two bumper cars collide into each other and each car jolts backwards. which one of Newton's laws is this?
    5·1 answer
  • What current is produced with a voltage of 6.0 V and a resistance of 445 ohms?17.4 mA
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!