Question

1. the momentum of a truck traveling in a straight line at 25 m/s is 37,500 kg m/s. what is the trucks mass?

a) 1,500 kg
b) 1,500 n
c) 937,500 n
d) 937,500 kg

1. which object listed below has the greatest momentum?

a) a 0.4 kg object rolling at 2 m/s.
b) a 0.05 kg object rolling at 0.2 m/s.
c) a 0.15 kg object rolling at 1 m/s.
d) a 0.15 kg object rolling at 2 m/s.

1. the definition of momentum is

a) the size of an object
b) the velocity of an object
c) mass in motion
d) a comparison between two objects

1. what is the objects momentum for 8 m/s

a) 12
b) 8
c) 10
d) 6

1. travel by car according to this graph, between 0.75 hours and 1.25 hours, what was occurring?

a) the object was stopped.
b) the object was traveling at a constant speed.
c) the object was traveling at an average speed.
d) the object was traveling at an accelerated speed.

Explanation:

14.

Step1: Recall momentum formula

The formula for momentum is $p = mv$, where $p$ is momentum, $m$ is mass and $v$ is velocity. We need to solve for $m$, so $m=\frac{p}{v}$.

Step2: Substitute values

Given $p = 37500\ kg\cdot m/s$ and $v = 25\ m/s$. Then $m=\frac{37500}{25}=1500\ kg$.

Step1: Calculate momentum for each option

For option a), $p_a=m_av_a = 0.4\times2=0.8\ kg\cdot m/s$.
For option b), $p_b=m_bv_b=0.05\times0.2 = 0.01\ kg\cdot m/s$.
For option c), $p_c=m_cv_c=0.15\times1 = 0.15\ kg\cdot m/s$.
For option d), $p_d=m_dv_d=0.15\times2=0.3\ kg\cdot m/s$.

Step2: Compare values

Comparing $p_a = 0.8\ kg\cdot m/s$, $p_b=0.01\ kg\cdot m/s$, $p_c = 0.15\ kg\cdot m/s$ and $p_d=0.3\ kg\cdot m/s$, we see that option a) has the greatest momentum.

Momentum is defined as the product of an object's mass and its velocity, which can be thought of as mass in motion.

Answer:

a) 1,500 kg

15.