Answer:
Explanation:
2. A 10 kg bowling ball would require what force to accelerate down an alleyway at a rate of 3m/s² ?
Notice that I completed the question with the garbled and missing values:
Data:
Physical principles:
- Newton's second law: [tex]F=m\times a[/tex]
Solution:
[tex]F=10kg\times 3m/s^2=30N[/tex]
3. Salty has a car that accelerates at 5 m/s². If the car has a mass of 1000 kg, how much force does the car produce?
Notice that I arranged the typos.
Data:
Physical principles:
- Newton's second law: [tex]F=m\times a[/tex]
Solution:
[tex]F=1,000kg\times5m/s^2=5,000N[/tex]
4. What is the mass of a falling rock if it produces a force of 147 N?
Data:
Physical principles:
- neglecting air resistance ⇒ a = g: gravitational acceleration: 9.8m/s²
- Newton's second law: [tex]F=m\times a[/tex]
Solution:
- Clear m from Newton's second law
[tex]m=\dfrac{F}{a}[/tex]
- Substitute with F = 147 N and a = g = 9.8m/s², and compute
[tex]m=\dfrac{147N}{9.8m/s^2}=15Kg[/tex]
5. What is the mass of a truck if it produces a force of 14,000 N while accelerating at a rate of 5 m/s²?
Data:
Physical principles:
- Second Newton's law: [tex]F=m\times a[/tex]
Solution:
- Clear m from Newton's second law
[tex]m=\dfrac{F}{a}[/tex]
- Substitute with F = 14,000 N and a = 5m/s², and compute
[tex]m=\dfrac{14,000N}{5m/s^2}=2,800kg[/tex]
