1. A car being driven by a physics teacher is located 0.4 km from a railway crossing and is cruising towards it with a v

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1. A car being driven by a physics teacher is located 0.4 kmfrom a railway crossing and is cruising towards it with a velocityof 30 m/s. The teacher notices a train to be within 300 m from thecrossing and moving towards it with a constant velocity of 25 m/s.If the teacher decides to "GO FOR IT!" and begins to accelerate hiscar the instant he sees the train such that the velocity of the caris 45 m/s when it reaches the crossing: Determine whether or not acrash will take place. Explain and show all calculations.
2. A football leaves a quarterback's hand with a velocityof 25 m/s at an angleof 30o above thehorizontal.(a) How long is the football in the air?(b) How far would a receiver have to be downfield from where theball was thrown to catch it just before it hits the ground?(c) What is the velocity of the football after 1.5s ?*Note: Show allcalculations.