Velocity and acceleration of a turtle

Click For Summary
A turtle moves with constant acceleration, taking 10 seconds to travel 10 meters from a fence post to a pine tree, reaching a speed of 1.2 m/s at the tree. To determine the distance from the fence post when starting from rest, the initial velocity at the fence post is calculated using the formula u = 2a/s - v. The acceleration remains constant throughout the movement. By using the known distance and time, the total distance traveled can be calculated and then subtracted from 10 meters to find the initial distance from the fence post. The conclusion indicates the turtle was 8 meters away from the fence post when it started.
tiffanyg
Messages
11
Reaction score
0
a turtle is moving with a constant acceleration along a straight ditch. He starts a stopwatch as the turtle passes a fence post and notes that it takes him 10s to reach a pine tree 10m farther along a ditch. as the turtle passes the pine tree, his speed is 1.2m/s.

how far was he from the fence post when he started from rest??
 
Physics news on Phys.org
8m i think

first find the velocity at the fecne post (u = 2a/s - v) then find the acceleration, which is constant for the entire trip, then it's a matter of using the info to find the total distance traveled and minus that from 10.
 

Thread 'Magnitude of buoyant force in fluids of different densities'

The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?
View full post »

Similar threads

How Far Was the Turtle from the Fence Post at the Start?
  • · Replies 5 ·
Replies
5
Views
2K
Acceleration and displacement question?
  • · Replies 3 ·
Replies
3
Views
2K
Acceleration and Distance problem
  • · Replies 2 ·
Replies
2
Views
4K
MHB Lily's question at Yahoo Answers regarding kinematics
  • · Replies 1 ·
Replies
1
Views
2K
Center of Mass problem: 40kg child on a boat catching a turtle
  • · Replies 1 ·
Replies
1
Views
4K
Problem with the power of car
  • · Replies 3 ·
Replies
3
Views
974
How can the time dilation equation explain faster moving clocks running slower?
  • · Replies 6 ·
Replies
6
Views
3K
Instantaneous Acceleration Given Equation for Velocity
  • · Replies 7 ·
Replies
7
Views
1K
Relation between Friction, Velocity, and Acceleration
  • · Replies 16 ·
Replies
16
Views
1K
When Will the Car Overtake the Truck?
  • · Replies 2 ·
Replies
2
Views
2K