In Example 6.3, what is the change in the cart's kinetic energy due to the shove

(a) in the Earth reference frame,

(b) in a reference frame moving in the same direction as the cart at \(0.60 \mathrm{~m} / \mathrm{s}\) relative to Earth, and

(c) in a reference frame moving in the same direction as the cart at \(0.80 \mathrm{~m} / \mathrm{s}\) relative to Earth?

Data from Example 6.3

A 0.12-kg cart moving on a straight, low-friction track gets a shove so that its speed changes. Its initial and final speeds measured in the Earth reference frame are 0.40 m/s and 0.80 m/s (Figure 6.9). Determine the change in the cart’s momentum as seen from  the Earth reference frame and a reference frame M moving in the same direction as the cart at a speed of 0.60 m/s relative to the track.

Transcribed Image Text:

Figure 6.9 Example 6.3. Ec VECT (m/s) 1.2 0.8 x shove AVEC cart 0.4 0 0 20 20 40 40 680 Ec x t (ms) 80 80 100 120