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1. A car travels due west, covering a distance of 60 km in 1.75 hr . What is its average speed in \( \mathrm{m} / \mathrm{s} ? \mathrm{mi} / \mathrm{hr} \) ? 2. A car travels along a road, and its position at time \( t \) is given by the equation \( x(t)=7 t^{2}+8 t \) meters, where \( t \) is in seconds. Find the instantaneous speed of the car at \( t=6 \) seconds. 3. The car's velocity increases from \( 55 \mathrm{~km} / \mathrm{hr} \) to \( 80 \mathrm{~km} / \mathrm{hr} \) with acceleration of \( 5 \mathrm{~km} / \mathrm{hr}^{2} \). Find the time elapsed in seconds. 4. A car accelerates uniformly from \( 28.5 \mathrm{~m} / \mathrm{s} \) to \( 36.1 \mathrm{~m} / \mathrm{s} \) in 90 seconds. Determine the distance traveled. 5. The train engineer of the new PNR train applied the brake while moving at \( 45 \mathrm{~km} / \mathrm{s} \). It produce a breaking acceleration of \( 12.5 \mathrm{~km} / \mathrm{s}^{2} \). How long it will take to fully stop?

          1. A car travels due west, covering a distance of 60 km in 1.75 hr . What is its average speed in \( \mathrm{m} / \mathrm{s} ? \mathrm{mi} / \mathrm{hr} \) ?
2. A car travels along a road, and its position at time \( t \) is given by the equation \( x(t)=7 t^{2}+8 t \) meters, where \( t \) is in seconds. Find the instantaneous speed of the car at \( t=6 \) seconds.
3. The car's velocity increases from \( 55 \mathrm{~km} / \mathrm{hr} \) to \( 80 \mathrm{~km} / \mathrm{hr} \) with acceleration of \( 5 \mathrm{~km} / \mathrm{hr}^{2} \). Find the time elapsed in seconds.
4. A car accelerates uniformly from \( 28.5 \mathrm{~m} / \mathrm{s} \) to \( 36.1 \mathrm{~m} / \mathrm{s} \) in 90 seconds. Determine the distance traveled.
5. The train engineer of the new PNR train applied the brake while moving at \( 45 \mathrm{~km} / \mathrm{s} \). It produce a breaking acceleration of \( 12.5 \mathrm{~km} / \mathrm{s}^{2} \). How long it will take to fully stop?

1. A car travels due west, covering a distance of 60 km in 1.75 hr . What is its average speed in m / s ? mi / hr ?
2. A car travels along a road, and its position at time t is given by the equation x(t)=7 t^2+8 t meters, where t is in seconds. Find the instantaneous speed of the car at t=6 seconds.
3. The car's velocity increases from 55 km / hr to 80 km / hr with acceleration of 5 km / hr^2. Find the time elapsed in seconds.
4. A car accelerates uniformly from 28.5 m / s to 36.1 m / s in 90 seconds. Determine the distance traveled.
5. The train engineer of the new PNR train applied the brake while moving at 45 km / s. It produce a breaking acceleration of 12.5 km / s^2. How long it will take to fully stop?

Added by Matthew C.

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