• Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
    Be the first to like this
No Downloads

Views

Total Views
2,515
On Slideshare
0
From Embeds
0
Number of Embeds
2

Actions

Shares
Downloads
36
Comments
0
Likes
0

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. Force and mass determine acceleration
    • Newton’s second law
    • Calculate force (F=ma)
    • Force works in a circular motion
  • 2. Newton’s second law
    • The acceleration of an object increases with increased force and decreases with increased mass
    Small force acceleration larger force acceleration small mass acceleration acceleration larger mass
  • 3. Newton’s second law
    • Also states that the direction in which an object accelerates is the same as the direction of the force
    force acceleration
  • 4. Calculating force
    • Force= mass x acceleration
    • F= ma
    • Standard unit: newton (N)
    • - The amount of force it takes to accelerate
    • 1 kg of mass 1 m/s
    2
  • 5. What force is needed to accelerate a 10 kg shopping cart 3 m/s ?
    • What do you know? m= 10 kg a= 3 m/s
    • What do you want to find out? Force
    • Write the formula: F= ma
    • Substitute the formula: F= 10 kg x 3 m/s
    • Calculate: F= 30 N
    2 2 2
  • 6.
    • If a 5 kg ball is accelerating 1.2 m/s what is the force on it?
    • F= ma
    • F= 5 kg x 1.2 m/s
    • F= 6 N
    • A person on a scooter is accelerating 2 m/s . If the person has a mass of 50 kg, how much force is acting on the person?
    • F= ma
    • F= 50 kg x 2 m/s
    • F= 100 N
    2 2 2 2
  • 7. Centripetal force
    • Any force that keeps an object moving in a circle
    • Force points towards center of a circle
    The force that keeps the female skater moving in a circle is the pull exerted by her partner
  • 8. Summary
    • Newton’s second law: Acceleration increases with increased force; decreases with increased mass. An object accelerates in the same direction of the force.
    • F= ma
    • newton (N)
    • Centripetal force: keeps an object going in a circle.