A car weighing 1500 kg, moving uniformly accelerated from a state of rest along a horizontal path under the action of a traction
| November 25, 2020 | education
A car weighing 1500 kg, moving uniformly accelerated from a state of rest along a horizontal path under the action of a traction force of 3000 N, acquired a speed of 36 km / h. Without considering the resistance to movement, determine how many seconds this speed was reached.
2 Newton’s law:
ma = F-Fc,
where m is the mass of the vehicle; a – acceleration; F-traction force; Fc – resistance force
Find the traction force:
F = ma + Fc = 1500 * 0.5 + 500 = 1250 H
Answer: 1250 N
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