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Answer :
Final answer:
The momentum of the tractor-trailer is 2.457 x 10⁵ kg·m/s, and its kinetic energy is 3.31785 x 10⁶ J.
Explanation:
To answer the students questions on physics:
a) What is the momentum of the tractor-trailer?
To find the momentum (p) of the tractor-trailer, use the formula p = mv, where m is the mass and v is the velocity. The mass of the tractor-trailer is 9.1 x 10³ kg and the velocity is 27 m/s. Therefore, the momentum is p = (9.1 x 10³ kg) x (27 m/s) = 2.457 x 10⁵ kg·m/s, directed eastward.
b) What is the kinetic energy of the tractor-trailer?
The kinetic energy (KE) can be found using the formula KE = ½mv². Using the mass of 9.1 x 10³ kg and velocity of 27 m/s, the kinetic energy would be KE = ½(9.1 x 10³ kg)(27 m/s)² = 3.31785 x 10⁶ J.
Learn more about momentum and kinetic energy here:
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