Question #29

Practice Question

Concept Applied

Using \(\omega = \omega_0 + \alpha t\) with \(\omega_0 = 0\), \(\alpha = 2\) rad·s⁻² and \(t = 3\) s, we get \(\omega = 0 + 2\times3 = 6\) rad·s⁻¹....

Read Full Step-by-Step Solution →

Question #30

Practice Question

A.$5 \text{ m}$
B.
0 \text{ m}$
C.
.
...

Read Full Step-by-Step Solution →

Question #31

Practice Question

A.5 rad/s
B.20 rad/s
C.2.5 rad/s
D.10 rad/s

Concept Applied

Angular velocity $\omega = v/r$....

Read Full Step-by-Step Solution →

Question #32

Practice Question

A.126 m
B.115 m
C.135 m
D.100 m

Concept Applied

Vertical component: \(u_y = 30\sin30^{\circ}=15\) m/s, so time of flight \(T = 2u_y/g \approx 3.06\) s. Horizontal component relative to train: \(u_x ...

Read Full Step-by-Step Solution →

Question #33

Practice Question

A.10 m/s
B.10√3 m/s
C.20 m/s
D.20√3 m/s

Concept Applied

The horizontal component of velocity remains constant, while the vertical component becomes zero at the maximum height....

Read Full Step-by-Step Solution →

Question #34

Practice Question

A.20 m
B.30 m
C.40 m
D.50 m

Concept Applied

To find the horizontal distance covered, we need to find the horizontal component of the initial velocity and then use it to calculate the distance. T...

Read Full Step-by-Step Solution →

Question #35

Practice Question

A.0 Ns
B.4 Ns
C.8 Ns
D.16 Ns

Concept Applied

The change in momentum is equal to the initial momentum, which is the product of the mass and velocity of the particle....

Read Full Step-by-Step Solution →

Question #36

Practice Question

A.25 m/s
B.43.3 m/s
C.50 m/s
D.25√3 m/s

Concept Applied

At the highest point, the vertical component of velocity is 0. The initial vertical component of velocity is 50 sin(60°) = 25√3 m/s. Since the acceler...

Read Full Step-by-Step Solution →

Question #37

Practice Question

Concept Applied

$H = \frac{u^2 \sin^2\theta}{2g} = \frac{400 \cdot (\sqrt{3}/2)^2}{20} = \frac{400 \cdot 0.75}{20} = 15\,\text{m}$...

Read Full Step-by-Step Solution →

Question #38

Practice Question

A.55.7 m
B.45.0 m
C.60.0 m
D.50.0 m

Concept Applied

Horizontal component relative to ground: \(v_{x}=20\cos30^{\circ}+10 = 17.32+10 = 27.32\) m/s. Vertical component: \(v_{y}=20\sin30^{\circ}=10\) m/s. ...

Read Full Step-by-Step Solution →

Question #39

Practice Question

Concept Applied

Relative velocity vector: $\vec{v}_{bg} = \vec{v}_{br} + \vec{v}_{rg}$. Magnitude = $\sqrt{3^2 + 4^2} = 5\,\text{km/h}$....

Read Full Step-by-Step Solution →

Question #40

Practice Question

A.40 m
B.56 m
C.70 m
D.85 m

Concept Applied

Horizontal component relative to the platform: $u\cos30^{\circ}=20\times\frac{\sqrt3}{2}=17.32\,\text{m s}^{-1}$. Adding platform speed gives

...

Read Full Step-by-Step Solution →

Question #41

Practice Question

Concept Applied

Using \(\omega = \omega_0 + \alpha t\) with \(\omega_0 = 0\), \(\alpha = 2\) rad·s⁻² and \(t = 3\) s, we get \(\omega = 0 + 2\times3 = 6\) rad·s⁻¹....

Read Full Step-by-Step Solution →

Question #42

Practice Question

A.$5 \text{ m}$
B.
0 \text{ m}$
C.
.
...

Read Full Step-by-Step Solution →

Question #43

Practice Question

A.5 rad/s
B.20 rad/s
C.2.5 rad/s
D.10 rad/s

Concept Applied

Angular velocity $\omega = v/r$....

Read Full Step-by-Step Solution →

Question #44

Practice Question

A.126 m
B.115 m
C.135 m
D.100 m

Concept Applied

Vertical component: \(u_y = 30\sin30^{\circ}=15\) m/s, so time of flight \(T = 2u_y/g \approx 3.06\) s. Horizontal component relative to train: \(u_x ...

Read Full Step-by-Step Solution →

Question #45

Practice Question

A.10 m/s
B.10√3 m/s
C.20 m/s
D.20√3 m/s

Concept Applied

The horizontal component of velocity remains constant, while the vertical component becomes zero at the maximum height....

Read Full Step-by-Step Solution →

Question #46

Practice Question

A.20 m
B.30 m
C.40 m
D.50 m

Concept Applied

To find the horizontal distance covered, we need to find the horizontal component of the initial velocity and then use it to calculate the distance. T...

Read Full Step-by-Step Solution →

Question #47

Practice Question

A.0 Ns
B.4 Ns
C.8 Ns
D.16 Ns

Concept Applied

The change in momentum is equal to the initial momentum, which is the product of the mass and velocity of the particle....

Read Full Step-by-Step Solution →

Question #48

Practice Question

A.25 m/s
B.43.3 m/s
C.50 m/s
D.25√3 m/s

Concept Applied

At the highest point, the vertical component of velocity is 0. The initial vertical component of velocity is 50 sin(60°) = 25√3 m/s. Since the acceler...

Read Full Step-by-Step Solution →

Question #49

Practice Question

Concept Applied

$H = \frac{u^2 \sin^2\theta}{2g} = \frac{400 \cdot (\sqrt{3}/2)^2}{20} = \frac{400 \cdot 0.75}{20} = 15\,\text{m}$...

Read Full Step-by-Step Solution →

Question #50

Practice Question

A.55.7 m
B.45.0 m
C.60.0 m
D.50.0 m

Concept Applied

Horizontal component relative to ground: \(v_{x}=20\cos30^{\circ}+10 = 17.32+10 = 27.32\) m/s. Vertical component: \(v_{y}=20\sin30^{\circ}=10\) m/s. ...

Read Full Step-by-Step Solution →