What is the net force on the car? 35. The driver in the previous problem applies the brakes when the car is moving at \( 90.0 \mathrm{~km} / \mathrm{h} \), and the car comes to rest after traveling 40.0 m . What is the net force on the car during its acceleration opposite to the motion? 36. An \( 80.0-\mathrm{kg} \) passenger in an SUV traveling at \( 1.00 \times 10^{2} \mathrm{~km} / \mathrm{h} \) is wearing a seat belt. The driver slams on the brakes and the SUV stops in 45.0 m . Find the force of the seat belt on the passenger. 37. A particle of mass 2.0 kg is acted on by a single force \( \overrightarrow{\mathbb{F}}_{1}=18 \hat{\mathrm{i}} \mathrm{N} \). (a) What is the particle's
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Initial velocity \( v_i = 90.0 \, \text{km/h} = \frac{90.0 \times 1000}{3600} \, \text{m/s} = 25.0 \, \text{m/s} \). Show more…
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3. To improve the safety of motorists, modern cars are built so the front end crumples upon impact. A 1200-kg car is travelling at a constant velocity of 8.0 m/s. It hits an immovable wall and comes to a complete stop in 0.25 s. (a) Calculate the impulse provided to the car. (b) What is the average net force exerted on the car? (c) For the same impulse, what would be the average net force exerted on the car if it had a rigid bumper and frame that stopped the car in 0.040 s? 4. In a tennis game, a 0.2 kg ball moving at 15 m/s is hit by a racket. After the impact the ball moves in the opposite direction with a velocity of 20 m/s. If the force F exerted on the ball by the racket is 700 N, how long is the time contact? 5. Bullet shown in the picture collides to a fixed block. 0, 2 s is the interaction time of bullet with block. If the velocity of the bullet is 250m/s after the collision, find the resistance of the block to the bullet.
Eduard S.
The driver in the previous problem applies the brakes when the car is moving at $90.0 \mathrm{km} / \mathrm{h}$, and the car comes to rest after traveling 40.0 $\mathrm{m}$. What is the net force on the car during its deceleration?
An 80.0-kg passenger in an SUV traveling at $1.00 \times 10^{3} \mathrm{km} / \mathrm{h}$ is wearing a seat belt. The driver slams on the brakes and the SUV stops in $45.0 \mathrm{m}$. Find the force of the seat belt on the passenger.
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